I think the issue there then is what you're expecting. You're looking at this in a rather two dimensional way. Either he likes you or he doesn't. Not only do relationships not happen that way but it's not exactly likely that you'll exchange a few messages and discover if he likes you.(Original post by Anonymous)
Yeah I think that's a good idea to message him about applying to uni but I'm just so scared because I don't want to annoy him or embarrass myself if he doesn't actually like me back
If your final goal is a relationship with this person and right now they're little more than a stranger or acquaintance then you need to fill in the middle stuff. You don't go straight from almost strangers to a couple. You don't really go from friends to a couple.
Talk with him and exchange messages, not with the intention of finding a relationship but with the intention of finding out a bit more and maybe becoming friends. If nothing else you'll get to go to University with somebody you know who isn't a complete stranger, which makes the experience that bit less daunting. If you solely try to talk with the assumption that you're going for a relationship and he will either reject or accept you then it isn't going to work out.
Get to know him and make friends with him first. If all goes well you can try being a little more friendlier or even asking him on a date if you're brave enough. But take it slowly, at your own pace. If you spend a few months just chatting casually and become good friends that's totally fine.
The added bonus in all this is that by getting to know him and becoming friends you are more likely to find out if he likes you. You're opening the possibility that he makes the first move. And if you do decide to make a move it will come across better if you're friends already. So go send him a message. Don't bring up relationships or anything like that. Just a general message like you might send a friend. Hi, how are you? Heard you applied to the same uni, etc. Yeah it'll be a little daunting at first but you'll get over it. Before you know it you'll have made a brand new friend.
Oh and good luck with Computer Science, Forensic Computing student here.
How do you have a great summer on the cheap?