If you ask someone you like to rate your attractiveness out of 10. Do not throw a hissy fit if they come back with 4 as the answer. It's your own fucking fault for asking the question. He doesn't like you and you should get over it, I can't be arsed clearing up your mess any longer. You sound so desperate, it's no wonder he said 4 so not to give your over inflated ego anymore of a boost.
Find someone else to fawn over.