I was in my step-cousin's house for dinner but when everybody went home my car broke down. My step-cousin encouraged me to stay at his house. Unfortunately that leads to us having to share a bed as there is no more spare bedrooms left. I had to go to bed in my small thong as I wasn't expecting to stay the night and didn't pack anything. When we are in bed I realise that Toby have a boner, which disgusts me as we are Step-Cousins, but he explain me that it won't go down. I just say to him to take his mind off it and it will go down. But it doesn't, so I decide to show off my body, tits and ass so he can jerk off and hopefully cum quicker. This doesn't work so out of frustration, I offer my step-cousin to give him a handjob/blowjob to speed things along which only really results in making both of us more horny. To the point where it's only fair if we both get pleasure as well so we decide to have sex against our better judgement. We end up climaxing together but in all the pleasure and euphoria I realised he didn't pull out which makes me really angry and annoyed at him.