My boyfriend got another girl pregnant....?

Well, you have to realize that even if him getting the other girl pregnant was a mistake, that he should still take responsibility, and that seems like what he is trying to do. You will have to talk to him about being together though, because that's not just up to you. Just call him, or something and tell him your sorry for the way you reacted , and then tell him you miss him, and that you can't stand him not being around. Well I wish you the best of luck !