You're choosing to be stuck and not doing anyone any favours. Honestly...it's Friday...do it! I'd be more concerned about what the parents would think of you continuing when this is how you feel. Don't think about it anymore, just do it instead. Then have a nice glass of wine and think of what it's going to be like when he's gone. you're punishing yourself and all the others.
As nice as the parents are, they would not go out of their way to do anything for you. you have to look out for you and the other kids who are being exposed to this. Feel bad for them, instead!