I saw an episode of How I Met Your Mother about keeping someone on the hook. The person you mostly keep around cos they give you an ego-boost but you don’t really wanna be with them like ever. I’ve done that… And I’m never doing it again if I can avoid it. It’s really not nice… If you don’t like someone as much as they like you, let them go on with their life and maybe they can find someone who likes them back instead.