mistake

I think I made a mistake.  I trusted and believed someone whom I am not sure I should have.  I hardly knew her so I figured she didnt have any reason to lie to me.  He on the other hand has a history of lieing, to his wife, to his exgirlfriend, and even gave me advice on how to put a better "spin" on stuff to my husband.  Why would I be any different?  So when she told me he went for her I believed her.  When she gave me detaiols of what he told her, i believed her.  and when he gave me an ultimatum, I ignored it.  Mind you he wasnt willing to give upo talking to his exgirlfriend for me, and it made me increadably uncomfortable.  So I didnt listen to him and he decided he cant handle that.  Talking to her today she said that he had told her he was really good looking, like a posterboy for the armed services.  THis doesnt sound like him at all.  He has pride, but he is also self effacing and not one to toot his own horn about stuff like that.  He admits he could be in better shape, that he is carrying a bit of extra weight.  She also said he wasnt as tall as he told me… but that was the reason he was in the Air national guard, he was too tall to fly in the airforce.  Did I make a mistake?  I just cant reconcile what she said with what I know of him.  I think I owe him an apology

still not sure I want him as a friend, I mean he did try to tell me who I could and couldnt have as friends.  Not sure I can handle that, especially when he isnt willing to do the same for me.  My friends are ttelling me to cut my losses, he isnt worth it, but I felt more connected to him than I ever have to anyone before and I dont want to loose that

and what do I do about her?  If its true that she is lieing to me, what else is she lieing about?  What do I owe her, she has tried to be a friend, or she is trying to hurt me for no apparent reason. I am so damn confused at the moemnt!!!