A study friend of my girlfriend, Anna (not her real name), was visiting during the holidays and stayed in the guest room of our apartment. Anna is without a doubt one of the most attractive women I know: fit, muscular, and incredibly beautiful. She goes to the gym every day and often jogs. Moreover, she is a fitness model with a decent Instagram following, where she is always seen in tight and revealing sportswear. I have to admit that I have already masturbated to her photos a few times.
It was almost impossible to take my eyes off her when she was with us, especially with my girlfriend nearby. Anna caught me staring a few times, but luckily she never said anything. To be honest, she doesn’t make it easy for me either; she often walks around in brightly colored sportswear that perfectly highlights her curves.
One morning, when my girlfriend was at work, Anna asked me to go to the gym with her. I tried to hide my excitement and agreed. The workout was tough, not because of the weights, but because I constantly had to fight my erection. She wore a tight green outfit with shorts and a sports bra, and it looked amazing on her tanned skin.
At the gym, all the men were staring while she asked me to spot her during squats. It was almost impossible not to get hard so close to her round, firm butt. At one point, she accidentally touched my erection when she squatted. Embarrassed, I apologized, but she smiled and acted like it was nothing.
When we got back to the apartment, I went straight to the shower. I was so aroused that I could barely control myself. Once in the bathroom, I opened Anna’s Instagram profile and started masturbating. Less than a minute later, the door opened, and there she was.
I froze in shock. There was no denying what I was doing, with my hard cock in my hand and her photos on my phone. Anna said nothing. She closed the door, placed her hand on my chest, and gently pushed me against the wall.
I was naked, but she was still wearing her sportswear. Slowly, she turned around and pressed her firm butt against my erection. I thought I was going to explode immediately. Then she started moving.
The feeling of her muscular butt rubbing against my cock through the smooth fabric of her shorts was almost too much. I breathed heavily as I tried to hold on a little longer. She was still hot and sweaty from the gym, and the shine of her back in the light only made me harder.
Her eyes were locked on mine through the mirror, with a devilish smile on her face. She clearly enjoyed teasing me like this, knowing she had full control. My hands gripped the towel rail tightly as my body gave in. With a low moan, I came hard, shooting rope after rope of semen over her back and onto her shorts.
Without saying a word, she took off her sports bra and slipped out of her semen-stained shorts. She handed them to me and said, “These need to be washed.” I caught a glimpse of her firm breasts and smooth pussy before she stepped into the shower.
I threw her clothes in the laundry and waited until she finished showering before I went myself. We never spoke about it again, and life went on as if nothing had happened.
