Do I Confess?

So, I took this college class with a guy last semester. We didn't really get along until the last few weeks. During those last couple of weeks, we messaged a lot about the class and our stress (lol).

This semester, I took another class with the guy. We sat next to each other and would message each other. I dropped the class 3 weeks in, but I still message him sometimes, and he sometimes messages me to talk about his class.

Anywho, I like the guy. He is a senior and does not live around here, so after graduation, I probably won't see him again. We also probably won't message again. I am basically certain he does not like me back because he barely notices me. I am wondering if confessing that I like him over text for closure would be weird. I heard him talking to a guy once about how girls don't seem to like him, so at least it would be an ego boost!