I don't know if it's has anything to do with BPD, but I don't know anywhere else to ask this.

What do you do when someone is driving you crazy? They answer too slow and appears as if they're not really interested in even interacting with me anymore. And it's really starting to get under my skin and I'm so tempted to just stop. Like, if that person hate me, then why bother again? I don't know, it's so confusing. Am I wasting my time? Am I worrying about nothing at all?