Yeah, it seems like a pretty silly thing to antagonize someone over. I'd guess from the context he's probably teasing, but there's still such a thing as taking a joke too far.
It's fine if you don't want to talk to him directly - and I don't think you should have to prove anything to him - but since this is a public post that he might see on his own anyway, I trust you wouldn't mind if I point him to our discussion here, if necessary? It'd be proof that he's definitely been going too far, if people outside the joke feel like they need to call for his friend's (or boyfriend's) assistance to put an end to it.
no subject
It's fine if you don't want to talk to him directly - and I don't think you should have to prove anything to him - but since this is a public post that he might see on his own anyway, I trust you wouldn't mind if I point him to our discussion here, if necessary? It'd be proof that he's definitely been going too far, if people outside the joke feel like they need to call for his friend's (or boyfriend's) assistance to put an end to it.