I was at the gym running on the treadmill when a really cute girl hopped on the one next to me, we sweated for a while and talked a little, we did a few other work outs together then introduced me to her boyfriend, he was pretty muscular after that I went to change out and while I was in my bra and panties she came in to the locker room and said some dirty things that made me blush, then she came up behind me and grabbed my hips and asked if I swing a certain way I just responded by saying I swing anyway I want to, she offered to hangout after the workout and I said yes so she gave me her number and address, I ran a few errands before coming over.

I was let in when I got there and quickly realized what I was going to be doing, she was already getting her bf ready, she sat back down and continued sucking his cock, I just joined In, we probably had sex for about an hour and her bf was definitely happy to play with me, he even came inside me