Why do I feel as if girls hate me?Watch
Surprising large % of other people also have issues. If they rudely backhand you for making an relatively ordinary approach (even if it is lacking in confidence), it's probably because they have something wrong with them too and like taking it out on others when they think they can get away with it. And frankly, why would I be remotely interested in those types? Why would you be, either?
I often pass judgements on people, not even based of how they behave towards me, but how I see them behave towards other people. If someone is by default a b!tch on an ar.sehole, and for example enjoys laughing at others' expense, and yet they wear a different face around me... I trust them even less. People often don't realise how observant I am, but it comes with practice and I've taught myself to pay attention to these types of things over quite a few years now, and have an extremely hard memory for certain behaviors in other people.
If you deliberately say something creepy and stupid though as a pick-up line, then expect rude responses. Obviously.