Opinions on this?

So I have the friend who I just can't read. It started with one time we were out for a staff party. We were drinking and on the way back I was pretty out of it but he grabbed my hand and held it the whole way home. Then says he doesn't remember. He also to this day will hold long eye contact every once in awhile and will do this eyebrow raise (which drives me crazy). Also, the other week we were walking home from a party with one other person. My hand happened to get close to it and he grabbed it again. It didn't last too long but we would do it any chance there was and then it's never spoken of... On the other side of things, there's times where he doesn't say much at all. We don't hang out a whole lot but its been becoming more frequent. Usually just see each other at the pub we work at. It just seems like sometimes there's something and then times there's not. I'm not exactly "out" and I have no idea what his deal is. Maybe I'm looking too into this and crushing hard. Any advice?