I need an alternative perspective.?

I'm a freshmen in college and I met this really nice third-year guy over a week-long alternative spring trip. Over the trip he was kind of flirty with me, and I suppose I was with him as well. I admit I found myself quite attracted to him, but was wary as of whether or not to give it a shot, since I had just gotten out of a bad relationship a few weeks prior and was worried I had just fallen for the first nice person to come my way, a rebound per say. However, on the day we returned from the trip, the dining facilities on campus were all still closed until the following day, and I didn't have anything in my dorm to eat. He lives off campus and has a car, and had offered to take me somewhere. I ended up taking him up on it, anticipating to pay for myself and for him too as a way of thanks. It ended up being like a date, however, and he even bought me my food and left the tip. It was a first date of sorts yet his company was nicer than anything my ex ever did for me. We made plans to meet up later in the week, but they never really happened, mostly just because I was shy and didn't call him up like I said I would, and as I mentioned before was worried I was liking him for the wrong reasons. Anyways, we ended up getting sushi the following weekend with some friends from the trip and then we all met his guinea pigs he has at home, since the place was near where he lived, haha. Since then we had a lot of silly text correspondences and to-be plans that never happened, and the only times I saw him were at club meetings and at accidental bump-intos at student run events he's involved with. Initially after the trip, he seemed really interested, but I was shy and admitting sending mixed messages because I was unsure of where my feelings stemmed from. And now, a few weeks later I realize that I really like him for the person he is, not as a rebound relationship, and I fear it's been too late. I can't tell if I still have a chance with him, and the school year is ending in about 5 weeks. So, I'm not sure what to do. Tomorrow I think we have another sushi date with some friends, as I saw him today at a leadership conference offered by our school. I suppose I'm also really intimidated because I wonder what a third year student would want to do with a freshie, and he's super involved on campus, even running for student government VP. And I liked him before I knew how involved he was with things, so it's not like some sort of attraction for power positions, as some dudes think females are into. Anyways, I just want to know what other people may think of the situation, but I feel awkward asking people I know for some reason. So, thanks for any feedback!