I think my cousin has a crush on me?

I went to my uncle's house for Christmas this year and his son (my cousin) is 15 and I'm 16. I've always been very close with but he seemed different this time. At lunch, he insisted that the two eldest cousins (him and I) had to sit next to each other. Then after everyone had gone to bed, him and I played video games in the bedroom until we were bored. Then we were wrestling but it kinda got touchy feely. He would lay sideways on me so the back of his head was on boobs then he'd lay there for a couple of minutes. Then he he started biting and licking my arms and face. He bit me right on nose once. It was dark in the room because the door was shut and the lights were out, we could only see the outline of each other. And also, a few times his face would get really close to mine, then I'd hear him lick his lips like he was getting ready to kiss me or something. Am I over thinking it? Or does he like me or something?