I am so sorry you are in this difficult situation. But having been cheated on repeatedly, I can tell yu that people who cheat, cheat. They like it. It's fun for them. The deception is a big, fun game to them.

As hard as it is for you with this pregnancy and all, I think you are in for a whole lot more heartbreak if you staty with this person. Eventually, he wil find an excuse to do it agan and you will be right back where you are now. Move on with your life. I am alone now, but I am better off without her. She's a cheater. It's her identity. You are way better off alone.