Friends or more?

Well lately I have been talking to this guy from school on msn I have never spoken to him in person (we come from differnt friends circles) and I have become very close to him in our conversations so much so he calls me his sister, we had a problem last week, he had been saying things to me rating me 90 and saying he liked me the most in our school and he wanted to kiss me the most, I have a boyfriend so I said nothing in return but I told my friend about all this and she told a couple of people he fancied me, this guy got all worked up about it saying he didnt and having a go at my friend, we made friends and back to normal but then we were playing truth I asked what he thought about my boyfriend, he said we didnt suit and he didnt think he really likes me. We had a huge argument but I forgave him because he said he was really sorry, I know he still feels like this though. I talk to him until about 2am everynight and im starting to think he does like me or could he just like me as a friend any advice thanks Btw I have no interest in him what so ever :) I also told my boyfriend about it and he said he doesnt mind me talking to him as long as I dont like him like that