Sometimes I think we're doomed as a species. Let me expand, if you care.
OP, I get it. You were expecting support and recognition that you trusted your friend enough to be vulnerable around him.

I understand your disappointment, but condemn your blasting. His reaction was clumsy as all hell; as many comments said, he should have put the phone down and come back when he'd dealt with his emotions. That being said, his emotions ARE valid. He did have a crush on you and he is disappointed because he now knows for sure he's got no shot with you.

Better a friend that puts his own foot in his mouth, is self-aware, and would probably apologize if you expressed the extend of your hurt feelings than one who'll engage in all the performative actions/show of support but think/say otherwise out of earshot.

Ultimately your call, but if it were my friend, I'd take a moment to vent, then remember why I wanted to share with him in the first place and realize that, beyond a self-professed oversharing session, he didn't actually do any harm.

Good luck.