why do i want a boyfriend so bad?

first time posting here so hi!im an early 20's guy and i keep finding these great guys who have things in common with me and then pushing them away quickly because of how enthusiastic i am at finding someone who i like.but it sucks for me because i really really want a relationship and i have no idea why its such a big thing for me, all i know is i eat up tons of my time thinking about what could be with people its not going to happen with.does anyone have any advice for me ? i need to break my cycle of meeting great guys them rapidly making myself un-likable.why do i want to be in a relationship above everything else!also don't suggest hookups its not for me :p