Does he like me? he kissed me but has a girlfriend :(

i really really like my friend from uni but he recently got a girlfriend. the thing is he flirts with me quite a lot and we get on really well. before he got his new girlfriend I got a bit drunk round at his place and we ended up just cuddled up in his bed. nothing happened but he seemed to be hugging me quite a lot. he even put his arm round me when we were sitting on the sofa and held my hand (by the way I don't know if I'm reading to much into this). when I went home for christmas I couldn't stop thinking about him, trying to work out if he liked me or not. that was when he got his new gf. I don't really know much about her, he doesn't like talking about her to me. we got back after christmas and everything seemed to be fine, we were still flirting quite a lot, almost as if he didn't have a gf. then last week I went over to his flat to watch a couple of films. we just hung out in his room. it was quite late and I'd already missed the last bus back home, so I ended up staying over. we both shared his single bed and we cuddled up quite intimately for most of the night. then in the middle of the night we got woken up by his flatmates drunkenly coming back. we both couldn't get back to sleep for quite a while and he started to run his hands through my hair and stroke my cheek and lips, I was already kind of stroking his back and neck. then he moved so that our faces were right up against each other and he suddenly kissed me! I pushed him away immediately though becasue he has a gf. things got a little bit awkward after that he didn't really speak to me properly for a few days, eventually he said it was because he was embarrassed and annoyed at himself but he seems reluctant to talk about it. I'm so confused by the whole thing but don't want to make things worse by asking him as we''ve only just really started talking again. I don't really know what to do! it's just that it was almost as if he'd forgotten he had a gf...

i'm sorry I've rambled on for so long, but any advice you have would be greatly appreciated1
Does he like me? he kissed me but has a girlfriend :(
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