My boyfriend hardly ever sees me? What gives? Help!?

I have been dating my bf for 4 and a half months now and I just feel our relationship isn't developing right. We are official on facebook and all that junk, I've met his parents, and met his friends recently. I am in love with him, but he is not in love yet, he says he really, really likes me. I have not told him I loved him. He is 20 with limited relationship experience and he's a bit of a nerd. I'm 19 and I have had two long-term relationships and countless other boyfriends and they all were openly affectionate, wanted to be with me often, and a few were in love with me. My bf is slow moving; a month in was when he first held my hand and actually kissed me besides a peck. He didn't even touch me on our first two dates. Two months in we slept together. We had one date a week on average. I expected to see him more frequently but it hasn't happened. He spends a lot of his free time playing video games instead of asking me out. I recently spilled my guts and told him I thought he was preventing me from knowing him better by not opening up to me, that he was distant, that he didn't seem to like me much because he is never able to say it and everything and I had not seen him in over a week and he didn't express any desire to see me and he said he was sorry he's not an open person and that he liked me a lot but he isn't very vocal about his feelings. He said he bought me something but he has yet to give it to me because he won't see me! I don't know what to do but I don't feel like I'm in a relationship or wanted and it's making me feel like crap... I've had two talks with him and he sees no desire to break up with me, I have given him outlets to say so many times but he won't break up with me. What gives? Is he just in this relationship to "be in a relationship"?