does he like me, can we be more than friends?

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So I have been friends with this guy for a while. We always talk and eat lunch together at school. And when school finishes we talk via Facebook. But I mostly start the conversations on facebook. He always tells me jokes, and I can never stop laughing. There is some of physical contact between us, I always lean on his shoulder playfully and stuff. Earlier, we were talking and he said that girls don't find him attractive and I told him that I know at least one girl does (me, but I didn't tell him that) and then we were playing truths over facebook and he asked who was the girl, I said I couldn't tell him, but he begged me, so I told him it was me, but after that he just carried on the conversation like it hadn't affected him at all, like he didn't care. He is like my best friend and before all of this he told me that he was happy that we were friends and that I was the first close female friend he had had in a long time. What should I do? Does he like me? Is there anything I can do to make the situation develop in a relationship? Thanks
-lucy