On the other other side of the coin, as I know myself to be physically unattractive and boring, if anyone approaches me at all, that's automatically
suspicious behavior, whether I find their appearance to be pleasing or not. If an attractive person approaches me, that's a honeypot for sure. Or a crazy. Maybe so drunk that a trip to the hospital might be warranted. Perhaps they're soliciting donations for charity. Possibly someone triple-dog dared them to talk to me. I immediately wonder what the ulterior motive is.
That makes it easy to not be sexist. The probability of any sort of romantic relationship with any given stranger is effectively zero, therefore it doesn't matter what they are.
And I try not to inflict myself on others at parties. Or on the party venue. Or anywhere in public, really. If you think it's hard talking to an ugly bore, it's far worse being one. We can tell that you want us to go away. We're not oblivious to the repellent body language. We just have to ignore it sometimes, because otherwise we'd never get to talk to anybody.
Sorry for being creepy, or jerky, or whatever. From the lips of Lord Farquaad, we know that it's already rude enough being alive when no one wants you. So thanks for being polite enough to not just look disgusted and walk away when we start talking. Because that's a thing that actually happens.