You have some major soul searching to do. As has already been pointed out, you have to decide what YOU want from a relationship. You, just like anyone else, deserve to be with someone who wants the same things that you want. To me, it feels like he cheated on you. Instead of talking to you BEFORE he did these other two girls so you could talk about it and he could try to help you through it, he told you afterwards. I know for me, this would damage my trust in him and if there's no trust, there's not much else.
And another thing to think about: As hard as it is for you now, it's going to be even harder when you're living together and you watch him leave to go off on a date. Just from the information you've given, I don't see him as a man of honor and integrity.