Gay crush

Okay so here's the situation:There's this guy that goes to a school about 20 minutes away from me. I've been told by multiple people that all of the signs point to him being gay or bi. His girlfriend recently broke up with him and he posted his snap on Instagram so I decided to give it a shot. He added me back and I've tried messaging him once a day for about 3 days with "Hey" and I've gotten no reply. I'm honestly so confused because I'm openly gay and he might be weirded out by this whole situation. I really just want to get to know him but what do I do if we won't even answer me?