Welcome to psych central. I don't have an answer on how you are going to go on. I'm kind of curious what exactly how you thought this was going to play out though. Did you expect a married man to leave his pregnant wife to be with you? That's some bad karma.

I hope you do find a way to move on though and try to find a relationship where you are not coming in between a man and his wife. Nothing good can come from this and you will end up hurt and alone again.