Search Results: tired of being single

My boyfriend and I have been together for almost a year now. To try and cut this as short as possible, I found him on plenty of fish back in June. Upon confrontation, he got the usual (and red flag) defensive, it wasn't me, that's bs, I don't even care, etc. attitude. Eventually, he admitted it. I have always had all of his passwords. It shows him signed up to ALL of these dating sites from Hot or Not to Country Singles (lol). We got into a huge fight over it because he swears up and down that he is not on any of the sites. I confronted him on Cupid. com, by making my own profile (yeah, went crazy girl status with that one), and saying "Gee, nice to see you on here!" to him. So, when he called that night, he acted normal, I brought it up, huge fight incurred. "This is ridiculous. I'm tired of you always accusing me. I feel like you make stuff up just to have a reason to fight, etc." He knows, or should know, how much I love/care about him. Keep in mind, he says he cares about me, but has not said he loves me. I said it to him in a drunken confession. Sometimes I feel ignored by him. But, really, I just don't know what to think. He'll go through these things where he just gets distant. So I give him space, then he gets mad and asks what I've been doing, why I haven't called, why IM being distant, etc. THEN (and I swear the VERY NEXT DAY) he tells me that I'm just a "needy girl." Uh?
I mean, literally, confusion has hit me like a ton of bricks. He treats me really good at times, but he will say things that make me feel like I'm worthless. I know "love is blind", so, from anyone's opinion, is this normal?
Also FYI, I only looked into what HE was doing months ago because he kept accusing ME of things all of the time. Sometimes he's really there, other times he's aloof and just kind of mean? He throws things in my face A LOT, which now I have started doing as well. I just don't know. Is there a chance? Or am I being stupid for even considering it?