Give me your Facebook name. I’ll message you on there, and then log him in on his phone and let him read it, and give ya a good reason to break up. That is narc-y behaviour, and you are better off without him. It might not seem it now, but take it from someone who has experienced such things before.

I feel like he’s almost definitely just bluffing. Don’t delete anything, don’t uninstall anything; just block him and let him live out his sad, lonely life.