So I'm exchanging advice with some chicks about something, and if they're being selfish af once they get their help and try ghosting, I send them this. 80% of the time, they respond back with a hurried "sorry", and give back detailed advice because I put their ego on display.

This is what I would send, and 80% of the time, it works like a charm. If I were to say some shit like this to set a boundary in a relationship, would it come off as too needy or invested?

"Honestly, I find it pretty inconsiderate that you got your advice, and then chose not to respond once you got what you wanted. I gave you the benefit of the doubt, but it looks like that's what you're choosing to do. I'm not angry, I'm just disappointed in you. It's your life though, so do you. Peace "