Boyfriend's Naughty DILF

Chuck feels something that he shouldn't for me and I know it. Even as we play basketball, it's all so obvious. I know that I shouldn't. We shouldn't let it happen, especially because I already have a boyfriend. And yet, something I have gets rock-hard when he bumps his body against mine. I think it might finally happen. It's dark and I hear someone swimming in the pool. I don't think that it's Chuck, but if it is... I can't help but wonder how he looks without his clothes on. Hmm, he's older than me and a professor in the college where I study, so I think that our little affair might happen so that I can get a better grade on my next midterm. Characters are 18+