This might sound weird, but taking no for an answer. Might wonder why I care if I already said no, but one of my partners I wasn’t into until I said “no” and they were like “alright” and didn’t bother me again, until months later when I asked them out instead. Something about knowing somebody has basic levels of respect has a way of changing my mind.
And a note for all guys reading this, that does not mean you should expect anything because you respected a no. If you’re expecting any reward, you did not, in fact, respect the no.