I (Jake, straight, in a relationship) had barely done my first few photoshoots as a male model. This one time I was shooting for a swimsuit spread with this semi well-known model/Instagram girl. Before the shoot I had checked out her social media, and whe had made some really hot bikini/swimsuit hauls.
Me and my girlfriend had been having a rough week, and I thought maybe we were about to break up. The night before I wanted to have sex with her but she turned me down, and I was a bit frustrated.
We were both in swimwear, posing in sexy positions. Not sure if it was real name, but she was known as Riley. After a few outfits, she was now in a white, very small bikini. I was getting tired, but also getting super horny. A few times, I had to ask for a break just to clear my mind, do some exercises to get rid of my erection. I was pretty sure she was noticing my erection, and her subtle winks implied she was amused by my arousal or something.