He says he won't date untill junior year, should I still go for it?

I really like this guy. He hangs out in my group of friends so I tend to see him once or twice a week. I'm not sure how he feels about me, but he looks deep into my eyes when we are talking and tends to laugh at stuff I say. He swears he wont date until hes a junior (we're sopres now), but I really like him. I want to ask him to our schools Sadie Hawkins dance, but I'm not sure if he'd take that the wrong way, like I'm trying to push him or something. The other night, i felt like he was ignoring me and he wasn't hanging our with our group that much. I kinda felt like something was bothering him. I was really upset over this. Should I go for it? or drop him? If I should go for it, any advice on how to? I've only had one bf before, so this is still kinda new to me. Thanks for the help!