Help - Confused!

So, about a month ago I met this guy at college (he enrolled late). Basically, we've been getting on really well and have been messaging each other for several hours a day and we've really got to know each other well. We also talk a bit at college too. He has a girl friend who he's been with for a couple of years and I think that he's straight (he hasn't said otherwise). I'm bi, and in the last week or two I've began to develop some feelings. I know we can't know for sure what he thinks/feels, but I've been trying to work out if he feels at all in the same way. I do kinda doubt it though. Here are a few things that have happened:

- He is constantly looking at me in lessons. I'll be writing or something and I'll look up and he'll be already looking at me. We then make eye contact for several seconds and he smiles. I tend to be the one who breaks the eye contact first. This has happened a couple of times.
- We message for hours on end even when he says he's with his friends. It varies who starts the conversation first through messaging. He comes up to me at college.
- He accidentally touched my leg when he reached for his bag when he was sat next to me. (I suspect it was a genuine accident though. Just thought I'd add it because of the other stuff).
- He's asked me numerous times if I've noticed anything about anyone in the class we're both in.
- He once dropped into a conversation that he has gay friends and how he's okay with that.
- I pointed out how he says a certain word a lot and he asks if it annoys me and he'll stop if it does.

That's pretty much all I can think of for now, I'll let you all know if anything else happens / I remember more. I've tried to be as vague as possible incase he uses these forums. Now, I doubt he does think of me like that and I might just be over reading the signs so let me know what you think. Thank you