He convinced his girlfriend to do it in the ass
She had never fucked from behind, she had never tried anal sex. However, the boy was obsessed with it, he didn’t think about anything else. They fucked often, but every time the boy pointed his cock at the girl’s anus she got angry and pushed him away. But this time it was different and he left it. They started as always, a romantic night, a good vaginal fuck… until he got on all fours. Once like this he tried for the umpteenth time to put it up his ass, he thought he would say no again, but this time he didn’t say anything.
Possibly she was also curious about what an anal fuck would be like, and she discovered it how it should be done, with practice. She felt her boyfriend’s cock lodged inside her ass and she became very horny, her pussy was dripping. In the end, an anal deflowering also deserves a good internal cumshot, so he gives it to her.