Beating the shit out of a delusional person will only give you momentary satisfaction, it won't snap them out of their delusions.
Their twisted mind will just rationalize a way for them to convince themselves that they didn't lose.
I mean, if you're actually desirable then you should be able to tell them when to leave without having to worry if they'll come back or not.
Basically, you shouldn't be concerned with any of this stuff if you're as desirable as you say you are.
If you're desirable and popular yourself, there's nothing more satisfying than winning the admiration and devotion of someone who by necessity casually rejects others.
But I guess that's a feeling you'll never really understand.