I think anyone with the advantage of youth should not take personal relationships like this to heart and make themselves miserable over it. You’ve got a lot of life left and it will change in ways you cannot imagine right now. “Forget”him for a bit and live your own life, you’ve tried to get his attention and he’s ignored you - so just go off now and live your life as the independent person you are and see if HE likes it when [i]you’re[/i] super busy and have no time for him.
If he shows up then, you’ll know if you’re happier with or without him.
I wish you the best whatever you do x

Better to overcommunicate than undercommunicate in my book. Be ready to hear what he may have to say as well.

sounds like he’s moved on