I don't know if I should text a happy birthday message. Don't know what to do!

Anonymous
So, I really liked this guy and he liked me back. Then at the beginning of this summer he just backs out of everything. I asked if we could be friends and he said yeah, but then I was telling him all the things he said we could do this summer and how all the effort I put in to making the long distance while I was at University maybe pay off this summer. I'm afraid he thought I was desperate and annoying/clingy. I didn't mean it that way at all, I was just telling him how hurt I was because he said we would hang out lots this summer and now he's just giving up.

Anyways, it's his birthday this weekend. I would like to say happy birthday through text, but I don't know if I should. I haven't talked to him in a month and I don't want to look annoying. But I just want to say happy birthday like I would to any of my other close friends. And I'm scared, what if I don't get a thank-you text back (yes I know dumb, but it'd be nice to be acknowledged). What should I do, wish him a happy birthday or not?
I don't know if I should text a happy birthday message. Don't know what to do!
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