left with doubt

I have been married for 3 years with this great man that i dated for almost 3 years. well at first i felt forced to be with him because of my mom. until last year I found out that i was really in love with him just when there was a few week for him to leave to Afghanistan. well the problem is not that the problem is that a week ago we were talking by phone and we really didnt had nothing to say to each other so i told him what was he doing and he said that he was talking with an old friend on myspace at first i felt happy because he was finally going to talk to a friend because he didn't had too many friends. a few days later I enter my myspace and saw that he had a new friend who's name was Araceli. the only Araceli i knew was his ex girlfriend the first one he had the first one he lost his virginity and that they dated for 3 years and that she was so in love with him. the first thing that crossed my mind was "why did he didn't just said that it was his ex i wouldn't mind at all". i let 2 days pass waiting for him to tell me the truth but he didn even mention a word the 3rd day that we where chatting i told him that i was going to cancel my accout with myspace because it was a waste of my time he only said ok, then i confront him telling him that why woudnt he told me he was talking to his old ex girlfriend he said that he had forgoten to put that little detail in there. but that he haven't doone nothing inapropiate that she was already married too. i believed that he was telling me the truth but i found out that he was the one that looked for her that made me felt really bad but i didnt told him how i felt he even gaved me his password to check his myspace and the messages she had send him but i just told him that i really didnt had to look at his private things. he told me that he felt bat of what he did because ii i where the one who haded done that he would feel uncomfortable. I saw her myspace the was really perty, i dont know why when i saw her myspace i went to the restroom to see myself in the mirror and i felt bad because i wasnt like her or even better to be honest this was my very first time being jealous of someone and disapointed about myself . the only thing thats on my mind is "why did he looked for her and why didn't he told me" i have 3 days straight without eating just because i think of that i try to distract myself but is something almost impossible.