Like every Tuesday, I finished work and got ready to go to the gym. Before the pandemic I always packed my bag with everything I needed to change and shower there, but for a year now, I have been dressed directly from home and showered again, trying not to step into the changing rooms unless it is essential, I always dress in Some thin black leggings that I have are much more comfortable for me to stretch and run on the treadmill. Until not long ago, I used to wear boxers underneath these, since I was afraid that they might be more transparent than necessary, but that day, when I was getting ready to go to the gym, my girlfriend approached me and asked me why I wore boxers under the tights, “they would look much better on you if you didn't wear anything,” he told me. I told her that I was afraid that it would be more transparent than it should be when doing some leg stretching or exercise. At that moment she opened her closet and started searching in the drawer. After a few seconds she took out something saying, "here it is." ”. I looked at him and saw that in his hand he was holding one of his black string thongs, he put it in my hand and told me, "take off those boxers and try this on." I didn't know what to say, I had never thought about wearing a thong, nor that my girlfriend was going to offer it to me, it seemed strange to me, I told her that I was embarrassed to wear one of hers, she looked at me and said "would you mind if wear your boxers? The truth is that I thought about it and said "no, not at all." After saying that, I went to the bedroom, I took off my tights and boxers, taking the thong by the sides I pulled it up until I felt how the strap was introduced between my buttocks, how the fabric in front gradually covered my most intimate parts. , I looked at myself in the mirror for a few seconds and the truth is that it looked really good on me, I took the tights again and put them on, now it was something else, I was protected from any transparency and on top of that I couldn't see anything or that I believed.

Once I was ready, I was ready to leave the house, when my girlfriend walked up behind me and spanked me like never before, I turned around and said, "When you come back I'll be the one to take it away from you."

On the way to the gym I felt strange, I knew that no one saw it but knowing that I was wearing a thong excited me a little. I arrived at the gym and as always, I started warming up on the treadmill, I stayed there for 10 minutes and stopped to start the weight exercises. I just chose a machine that was occupied by a girl more or less my age, 27 years old, she had a well-groomed body like mine, I imagine that thanks to the hours of exercise we practiced, I approached her and asked her if she minded alternating with me, She was very nice, she told me that she had no problem, that she liked being accompanied, since it forced her to go faster.

While we were talking she finished her turn and got up, I stood with my back to her and grabbing the bar I sat in the same position she was in seconds ago. When I finished the repetitions I got up and turned to tell him that I was done. She, with a smile that I didn't understand very well, told me “great, this is just the pace we have to keep.” As she sat down this time, I saw how her shirt was riding up with each repetition and I started to notice what a nice ass she had. Like me, she was wearing tights, which stuck to her, making her ass look amazing. When he got up, I could see that silhouette even better, for a moment I was confused, but his words brought me out of the trance, "here's David, your turn." This time the last repetitions were more difficult for me, I stretched my arms more and that caused part of my back to be exposed, I finished and stood up. Laura looked at me again with that silly smile I had seen the first time, but I continued not to care.

We finished with that machine and I wanted to do some leg work, Laura apparently planned to do a route very similar to mine, so we decided to go together to maintain the pace and motivation. We chose one that exercises the back of the leg, one in which you lie face down and pick up the loose ones. I was the first to start, I did the usual 10 repetitions and got up slowly so as not to get dizzy, "it's your turn" I told Laura. This time she was not only smiling, but she was a little red. He lay down and began the exercise. Without being able to avoid it, I started to look at her ass and what I saw drove me crazy, it was a round, perfect ass and thanks to the tights you could sense some fine lines that clearly drew the outline of the underwear that was lost between the buttocks. At that moment I understood why he smiled at me every time I got up and I understood why he had blushed this last time. She smiled at me because when I did the exercises the straps of the thong I was wearing were marked and she blushed knowing that if she lay down I could see that beautiful ass like her, imagining her underwear with the pattern that was marked on it.

When she got up I smiled at her just like she had done on previous occasions with me, this time I knew that when I lay down she was going to be looking at my ass without any shame, so I tried to provoke her a little, I tried to lift my buttocks more so that she could have a better view. and I think I succeeded, because when I raised my smile it was a mischievous smile accompanied by a comment: "I like your clothes, it's lucky that some of you guys wear tights to the gym too." We finished doing the exercise and it took us a while to decide which one would be next, I couldn't focus much on the circuit anymore and I let her choose without thinking carefully about what she was doing. When I was trying to concentrate on the exercises, I received a message from my girlfriend asking me how I was doing with her thong on. I replied saying that I was liking it, the only thing was that I was going to return it a little sweaty. She responded immediately "no." Don't worry, if you liked it, I'll give it to you, it looks great on you, I hope it doesn't show through so you don't feel embarrassed. He clearly had no idea what he was experiencing.

After putting away the phone, Laura told me that we were going to do glutes, this was no longer about exercising, but about continuing to enjoy our bodies. Unlike the previous exercise, she was the first to start, I couldn't stop looking at her, in one of those, she turned her head and caught me completely, she laughed and continued with the exercise.

When he finished, he left the machine with me and told me "now it's my turn to enjoy." I was starting to get hot, so it was no longer what I could see from behind, but what was visible in front. I felt like that thong was not enough to cover me, it was getting deeper and deeper between my buttocks and it was making me nervous. When I got up, she continued looking without caring what I might say or think, I think she saw that the thong did not cover me completely, but she didn't comment anything. I finished the series and he whispered in my ear, "I don't think it's your size and maybe mine is."

This was already too much, not only had I never worn a thong, but now two different women were offering me to wear theirs. I told him that if it were mine I would offer him a trade, but that it wasn't and I couldn't show up at home without it. To which she replied that she was not offering me an exchange, but rather letting me try it on while she tried on mine. He turned around and told me “in 5 minutes we will meet again outside the locker room.” Without hesitation I went to the men's locker room, when I entered there was no one, so I took off my tights, looked in the mirror and saw how well it fit me, I lowered it because I didn't want anyone to see me like that. In the process, I got excited when the strap came out little by little from between my buttocks. I didn't really know why I felt that way, but I didn't dislike it at all. I put the tights back on and when I was ready to go out, I inspected the thong a little. , he was a little sweaty and there were some signs of excitement, I doubted whether to give it to him in that state, but finally I took the risk and went out with him, held in my hand. When I left, Laura was already waiting for me, I approached her and she extended her hand to me, I put mine in and felt how she left a thin cloth on it. Like her, I left mine in her hand, she grabbed it and said, "See you here in another 5 minutes."

I quickly entered the locker room with a crazy desire to see what it was like, as soon as I entered, I checked again that no one was there and I looked at it, it was a sporty navy blue thong, it wasn't as sweaty as mine but you could tell it was the one I was wearing. I didn't want to delay any more and I put it on. It was very elastic, so it fit me perfectly. When I got to cover my parts, it covered the area much better than my girlfriend's, but it's true that the sensation of the strap I liked it better than this one, which was wider, having it completely inserted excited me.

I put on the tights and noticed how with this one it was more obvious that I was wearing a thong, but at this point, I didn't care.

I went out again but this time I got ahead of Laura. By the time he came out, he was starting to do pecs. He approached me and said, "Now I understand why it's not your size, because it's not a boy's, did your girlfriend leave it for you? Is that why you couldn't exchange it for me?" "That's it," I told him. «Well, I don't know about your girlfriend, but I liked putting it on knowing that you used it and feeling how wet it is. Do you like mine? «I like it a lot, it is true that it covers my parts better, the bad thing is the back strap, I don't like it as much as the other one, but since it is so thin, it is very comfortable, anyway it excites me a lot knowing that you had it on a long time ago "Just 10 minutes, I think it's better that I give it back to you, it won't be in good condition otherwise."

She nodded at me, making it clear that I shouldn't take it off and asked me, "What would your girlfriend say if you showed up wearing a thong that wasn't hers?"

“I don't think he liked it very much, but you're not going to do that to me, right? You promised me it was just trying it on,” I replied.

"Don't worry, I'm good, I'll give it back to you before we leave, we're going to continue with the exercises, otherwise today we'll leave without doing anything."

Laura started to help me while I lifted weights, then we changed and she was the one who did it. To finish I told her that I like to run a little and then stretch, she told me that she also used to do it that way, so we went to the treadmills. We were running for about 30 minutes, at 10 I was already starting to sweat and I was very embarrassed to return her thong all wet, but I thought that she would return it to me in a similar state, so I didn't worry anymore and continued.

When I reached the half hour mark, I looked at Laura and asked her if we could stretch a little. She answered yes and we took two mats to go to the yoga room, a room full of mirrors, we entered and we were alone.

I began a back stretch, which involved bending down until I touched my feet with my hands. At this moment, Laura had a view of my ass with the tights and her spectacular thong. I no longer cared much that she looked at me, even I liked. I was doing that when I felt his hand slide over one of my buttocks, until now we had not had any contact, a chill ran through my entire body and at that moment I realized what we were doing. I stood up and told her that I couldn't, that I had a girlfriend, that it had been a mistake to make the change, that she was a beautiful girl with a body of 10 but that I couldn't do that to my girlfriend. She understood perfectly and stopped.

We finished the stretching and it was time to exchange thongs again, she gave me a condition, "I will give you the thong back, if you promise to train with me every Tuesday." I certainly wasn't going to miss the opportunity to train with that beauty, so I said "sure, that's done."

We each went to our locker room, this time there was another young boy when I went to change, luckily he got into the shower just as I was entering, I pulled down my tights and looked at myself in the mirror, I wanted to keep a memory of the day and I took a couple of photos, then I pulled down my thong and put it on the bench, I finished putting on my tights and picked it up, it was soaked, I was embarrassed to give it to him but it was his, so I couldn't do much else.

I left the locker room to give her the thong, when I saw that she was waiting for me but with the backpack on, I imagined that she would go straight away without putting it back on, normal, she wouldn't want to put on something that is wet. I approached her and as on the previous occasion she extended her hand and gave me "my" black thong along with a paper telling me "see you next Tuesday" and she left. I didn't know how to react, because I hadn't returned her thong, I imagined that her intention was to give it to me, that's why I didn't go after her, although I was left with doubts. I turned towards the locker room again and entered. Now the boy from before was finishing dressing, so I sat down, putting away my thongs as best I could so they wouldn't be seen, and I started reading the note.

Note: I really enjoyed today's training, I didn't know any boy who wore a thong and I loved seeing you in it, your girlfriend is lucky to be able to see you without tights and take advantage of what I saw ahead. I'll give you back your thong a little wetter than it was, I hope you don't mind haha, in exchange I'll give you mine, from what you've told me, the size fits you well, so you can wear it whenever you want, I'm sorry not feel that humidity that you will feel when you put on the one I give you, but I like the idea of ​​knowing that you will wear it at some point. I leave you my number so I can organize the training sessions.

I finished reading the note and the locker room boy was already finishing collecting his things, so I waited and as soon as he came out the door, I took off my tights, before putting on my thong, I looked at him a little, he was wet and it turned me on. Thinking that Laura had been wearing it minutes before, I had to relax because otherwise I wouldn't be able to put it on, so when I calmed down I slid it down my legs, until I felt how the strip was being introduced between my buttocks, a shiver ran through me. my body, I looked at myself in the mirror again and it occurred to me to take a photo of myself just like I had done with Laura's, I didn't want to risk it anymore and I put on my tights to go home.

I didn't really know what to do with Laura's thong, since it didn't have pockets, so I grabbed it in my hand and left the gym.

I arrived home and Leire opened the door for me, I entered quickly so that she wouldn't see what I was carrying in my hand, I entered the room and put the thong in my underwear drawer.

I returned with Leire and she started asking me, “How are you?” Have you been comfortable? Has anyone looked at you? “. I responded that yes, that I had liked it a lot and that even having the strip introduced excited me quite a bit, I didn't want to mention anything about what happened with Laura. My girlfriend continued with the questions, “so you like having something back there!” “Yes, I had never felt it and I liked it,” I responded, thinking it would be an innocent response.

“Okay okay, that's good to know,” she told me.

My girlfriend got up from the chair she was in, took my hand and dragged me to the bed. There she pushed me and I fell on my back, she got on top and started kissing me, some passionate kisses, she took my hands and held them above my head as if they were handcuffs, I was already climbing up my arms. walls, he went down little by little until he reached the seam of the tights and grabbing them with his hands he pulled them down.

He left me with only his thong, he looked at it and saw that it had some stains.

Leire: “I see that it is true that you liked it hahaha, I also see that it does not hide what is necessary when you are excited, I will have to leave you someone else.”

She grabbed the strap of the thong with her teeth and pulled it as if she wanted to tear it off. She began to run her tongue over the fabric. She stayed like that for a while until I grabbed her by the waist and we changed positions. She started to be underneath and I am on top.

I took off her clothes, leaving her only with a white thong very similar to the one I was wearing.

I wanted to imitate her and I started with a passionate kiss, the next thing was to go down like she had done, I gave her kisses all over her body until I stopped at her waist, I imitated her bite by pulling on the strip and when I let go she looked at me with an angry face, He made me climb up and said in my ear "I'm going to show you how to do it", I felt his hands go from hugging my neck to sliding until they came across the strap on my waist, he put his hands on my buttocks and separated them. It was a strange sensation, but not unpleasant, I was thinking about it when he pulled the strip and let it go suddenly, I approached his ear and told him “I'm loving it, you can continue as far as you want.”

Leire: “Are you sure you let me do whatever I want?”

David: “Yes, whatever you want.”

Leire: “Buff, you don't know what it made me feel to see you in my thong, from that moment on I haven't stopped imagining all the things I would do to you.”

He let go of my buttocks and put me face down, he told me to stay like that, he would be right back. I listened to him and stayed still, when he came back he got on top of me, spanked me and told me “I want you to enjoy it, if at any time you want me to stop, tell me and I'll stop.”

I couldn't guess what was waiting for me, he kissed me all over my back, reaching my ass, he spread my buttocks again and ran his finger along the strap of the thong, it was making me very sick, he grabbed the strap and let it go anyway. than before, only now she had a direct view of what he was doing. He took the strip again, but this time he moved it to one side and made the journey with his finger, but without fabric in between.

Suddenly, I noticed something cold in my hole, “ugh now I knew where the shots were going,” I thought. I felt how he was putting pressure with one of his fingers, he asked me if I was okay and if I wanted to continue, before I could say yes, I felt how he entered me, he came close to my ear and told me.

Leire: “Do you like me to put it in you? or do I take it out?

David: “put it in, put it in as much as you want.”

Leire: “As soon as I saw you in the thong I wanted to do this to you, I'm glad you like it, because it won't be the last time.”

He finished saying this and started moving it. I had never felt so much pleasure, he approached me again and said:

Leire: “Put yourself the way you usually ask me.”

I understood her perfectly and got down on all fours without her giving her a finger. With her free hand, she started to touch me, if I continued like this I wouldn't last long, I asked her to stop and instead of doing so, she began to insert her finger in and out more quickly, I was about to explode, so she I moved to remove the finger, grabbed Leire and laid her on the bed. I took off my thong and got on top of him. Leire was very excited with everything she had done to me, so it didn't take me long to get her to have her first orgasm. I introduced it to her, grabbing her legs and putting them on my shoulders, I know she loves that position because it goes in as much as she can, while we were in that position she touched her nipples and screamed, Leire didn't react, she was completely gone, I approached her ear and I told him.

David: “Are you liking it?”

Leire: “Yes, keep it up, even inside, I love it when you make me feel like that, I feel it all.”

I spanked him, I know he loves them in that situation, and I increased the pace.

We were very close to finishing both of us, so in case I felt embarrassed later, I approached his ear and said:

David: “Just know that I loved what you did to me today, I would like to repeat it whenever you want.”

Leire: “Don't worry, that little ass is now mine, I'm going to do many things with it.”

I heard that and I couldn't hold on, I accelerated the pace, Leire started screaming like she does when she's ready and we both came at the same time.

It was one of the best experiences I had had up to that point, between the gym and what I experienced at home, I was still trying to assimilate it.

I got out of bed, grabbed the thong and went to shower, Leire followed me and when I put the thong in the wash she told me:

Leire: “That one is already yours, but we will buy more, some that are for boys so that they fit you well hahaha.”

I got into the shower with leire.

Source: https://relatoseroticos.us/un-dia-en-el-gimnasio-muy-especial/