I think you’re very mature to be raising this issue. Not everybody wants kids. Some people change their minds, and others don’t, so when you date a single parent, you have to decide if this is a future you want. Ideally, you know this before you begin dating — but many times you just don’t know until you’re into the relationship. The thing is that if you stay with him, his kids and their mothers will be part of your life with him as for long as you are with him, and if that is something you don’t want, do not feel guilty, but do act accordingly! You can love someone and not be compatible with them and that’s what’s going on here. He’s great, but you don’t want a life with children and their mothers, so be honest about that with him, and let go and move on. And next time around, don’t get involved with someone who has children since you already know that kids are a deal breaker for you. 🙂