Thanks all!

This is the girl that I felt we broke up our marriage over. At the time it was all happening he told me he had a "girlfriend" because we were "over" anyway. Then once I was gone and he missed me he said he was never actually with her as gf and bf but that she chased him so he told me that they were just to hurt me. I believed him, but then she's comes in and tells me that and it fits in too!

I talked to him about it somemore after he calmed down and was ready to talk a little more lastnight. I just have to believe him and try to trust that he's not lying. He's never been able to lie to me and keep it going he always has broken down and told me the whole truth one way or another.
Since it's me he wants to be with now and not her or anyone else for that matter that's what I am going to work with reguardless of what happened in the past. What's important is what he wants right now matches with what I want . . . us to try and make our marriage work. I honestly feel that I have more to lose by stopping this relationship right now than I do by proceeding into it. I felt better yesterday after I was angry and got it all out.
I definately need him right now to help get me through this problem with my pregnancy . . . which will hopefully turn out to be nothing! But as it stands I don't think I could get through his without him.

Why does marriage have to be such a rollercoaster. . . sometimes I feel like I just keep bashing my head of the same walls and then standing back and going, "wow that was stupid . . won't do that again." and then I'm right back at it!
Thanks again for all the great support!