Your step-mothers pregnant friend is staying over and as she is cleaning she finds your cum crusted socks and tissues and asks if you're still having trouble finding a girlfriend. She then tells you you can use her pussy as a cum dump and she casually lets you have sex with her as she talks casually telling you pump into her. The next day you grind against her and she invites you to fuck her again while she's on her phone until you want her to ride you. She does remind you that this isn't cheating, in fact its healthy to get the load out, which of course you do!