My Husband Is Making Me Rise Some Concern About Him: He Is Being Sneaky And I Don’t Know What Is Going On!?

Ok so here’s the deal. My husband has been deployed to Iraq for the last 12 months, he normally tells me everything and we have had a close connection. The thing is our first year was pretty bad, he couldn’t stop looking at internet porn, was very possessive and controlling. So then when I raised all this concern he shaped up, (I told him I was leaving him) and then he did a total 180.
Well while he was deployed he told me that a female coworker was coming onto him and that she kissed him and he reported it and they moved her. But he waited a whole month to tell me anything about it, and then couldnt understand why I got so upset.
Well one day on skype a girl messaged me thinking I was him, I had a picture of him up and not myself, and she said she hadn’t seen him on the site lately. So I clicked on the link and it was an online voyer type sex site. Where they apparently can perform on a web cam. So I typed in an email address and figured out the password and sure enough he had a profile with them. He didnt have anything on his profile except a picture of him from a few years ago. And it didnt show that there had been any contact with anyone or anything, his profile was empty except for a picture. He told me what his email and password were but I never invaded his privacy to check on it, but I did that time and found all these emails in his spam folder from an internet dating site. So I figured it out and signed into that one as well, same thing, he wasnt contacting anyone and the only thing on there was a picture from a long time ago. So then I confronted him about it and he said he didnt know how to delete them and that he hadent visited them in 2 years (since we have been married) He is a real slacker on things and tends to just forget about stuff and is quite lazy at times. So he didnt see what the big deal was that he had those sites before and he hasnt visited them since we have been married. The thing that bothered me was just that he had one in general, I could see that there had never been any activity and no contact.
Well I recently left base after picking him up from his tour so that I could take my finals here in another state, and I can’t help but have a gut feeling, maybe Im just being insecure.
While he was gone I made a facebook account and he totally went off the deepend saying that married couples shouldnt have those kinds of things (he deleted his myspace once I made a facebook, I deleted my myspace when problems arose from male friends contacting me, he was also monitoring my myspace) so I deleted my facebook. Well today I went to see if maybe he made a facebook or myspace or whatever. Well to my shock he did make a facebook, but went by an alias name, not his real name, the same thing though, no profile, no picture, no info other than email and age, no nothing to the profile. Its really strange. I dont know if he is leading a double life, or if these are cheating tendencies, or he was trying to see and monitor if I was getting another facebook. Just strange. I don’t really think its normal behavior and would really appreciate any advise. I love him, and he really is a sweet guy, but some of his quirks are really weird. Like his jeolousy, possessive and how he monitors me on things. I really need some advise with this, because I dont want it to lead to future heartbreak, I have never had distrusting issues with him until I left for my finals, but Ill be gone for 3 weeks and then supposed to be going back up there. If you can give me good advice I would really appreciate it, this is really hard for me, if you need me to clear anything up just ask. Its hard to write this whole speal out like this! Thanks for your time!
Oh and another thing is he just has been acting pretty distant since I left, he says nothing is wrong, but I just cant help but notice. We normally tell each other everything, and can tell when something is wrong with one of us!