HOW TO GET OVER AN EX?

So long story short this guy and I were super super close, almost dated but neither of us had enough balls to do anything about it, and now we’ve stopped talking altogether... we used to talk all day every day and now nothing cause some shit happened... But that’s the basic story. Anyway I haven’t heard from him and I’m too stubborn to text him unless I get to the point where I can’t take it anymore.... I figure if he wants to talk to me he will right?

But if any of you could help a fellow girl out..... how do I get over this?? :(( i miss him so much...

PS It’s his birthday next month... should I text him a Happy Birthday message and then see what happens....? Or leave it alone?? Idk!!!