You should've told him how you felt. Maybe he felt the same way but was unsure if you did. Can't hurt to go up to the guy and talk to him. You gonna either succeed or fail. And this is for guys too. Most men or women will reject you nicely, just gotta try. You could've talked to him about school stuff and go from there if you needed an opening. You pass up so many opportunities and never know what might've been. What's the worst that could happen if you try?Had this happen with a guy I found attractive back when I lived in the college dorm.