Do I say anything

wow what to do what to do, Ok maybe I should start from the beginning. I am not perfect I know that I never clamed to be or never would clamed to be. Many years a go me and Tom met we were young got pregnant then married, he eventually cheated on me and we worked that out. I decided I loved him so much that I was ok with it and that if he wanted to do thing all I wanted is for him to tell me, I would be a little sad but I could keep that to myself.  so years latter he goes tdy (military temporary station) and I checked his email just to get the notifications off the Ipad, something caught my eye, it was a perianal add he posted looking for someone not to sleep with but to just hang out with, not guys just women. While I would be cool with that I can see being alown and having it hard to make friend that would be easy. he just wanted someone to talk and hang out with while he was half way across the country. What does upset me is that fact he still has not told me, which makes me wonder if he is hiding more from me, did he sleep with some one, did he even hang out with anyone or was it just a couple random emails? When he got home he has been stand offish, doesn't really talk to me and hasn't really touched me, I know he is sleepy but I feel so freaked out. Am I not good enough for him, did he find something better than me and just doesn't know how to say it. Also form a pic on his computer or two girls on a bed the pic name was with Sam or not (by the way Im sam) Does that mean he sleeped with them or would if I want there. would he tell me that if he did. I think I should just tell him but what if he gets mad at me and doesn't want to talk about it. I don't want him mad at me I love him. What if all my thinking is true and he leaves me what do I do, I don't want to live with out him. what if there is really nothing and its just my head going wild and I'm very wrong about every thing. guess I need to figure it out.