Is he using me

Well the first thing to know is that we will have been dating for two years this November. Yes we have had some problems and we had one very large fight this summer were he said he wanted to break up but we ended just staying together. When ever it's discussed he just says that he would never actually break up with me that he loves me and that he's always going to be with me. Well our problems are always small arguments because I want to have a relationship where we can be open and talk but at the same time respect each other so meaning we wont just say things that are unnecessary or could hurt the other person. Well there's two problems at hand the first is we had a little fight the other night because I was stressing out over school (were in college) and I know I stress out easy but what I needed was him to be there for me and instead he got mad and said I'm negative about my thinking and just give up then. Well I find out later that he was messaging his best friend when he left the room out of anger. And what he said to him about me was horrible. His friend just broke up with his girlfriend saying that it was a long time coming and that she was to immature and that the girl he's interested in now is very mature. My boyfriend reply's with a mature girlfriend I could go for one of those. His friend asked if there was something wrong with me and he says that I'm immature as fuck and that he has to hold my hand for everything. (I don't see it like that I see it as he's got experience with things I don't and he should want to help me not that I couldn't do it on my own if I had to.) well anyways his friend told him to dump me and he said that it was hard because we got a lease together (which we do but we haven't moved in yet that's not till the first of the month) and he goes on to say that he's tried before but he always takes me back. His friend told him that he fucked up and my boyfriend says that also my uncle is suppose to help him get a job after graduation in theory and that its kinda tough to break up knowing it could help with a job. Its kinda fucked up to think that way and that he feels terrible about it. his friend says that he did the same with his girlfriend but about sex. So my boyfriend says that he's trying to get a solid internship for next summer so he will see how he feels about the relationship after that and his friend tells him to stick with it. At the end of the conversation they talk about my boyfriend going to visit him for a few days and that they will party. I'm a complete wreck because I have no idea if he said this because he was mad at me and trying to look cool to his friend or if he truly believes this way and is only using me out of connivence and will dump me to the curb when he's through. I tried to talk a little about it by asking if he was staying with me because he felt bad or out of connivence and that we didn't need to move in together. And all he says is that he loves me and that he will never leave me or break up with me so he's not going any where and that its not like he doesn't think about what he does so if he didn't want to he wouldn't of chosen to move in with me that he is because he wants to. But does he want to because he needs me around if he needs me for that job? He never wants to talk about our problems because he just loses his temper and gets really mad. But I can't help feeling awful and as though he's going to do something that could hurt me when he goes to visit his friend. The other problem I mentioned is that I found out he looks at this girls profile on facebook and twitter and anything else she's on on the computer but he's not friends with her on any of those things. He meet her once a few years back and still remembers her. Why would he always look at her pictures and post? He deny's that he does it but I've seen the proof. I feel he only tells me certain things because he thinks that's what I want to hear or to end the argument. Plus what bothers me is that she just moved to California herself and I fear that he's just buying his time till he's there and can have a chance with her and leave me for good. I don't want to get used and I need help knowing if that's what's really happening.

since you heard this its time to confront him about this