In a relationship intimacy becomes a bit different i.m.o.. A person kind of makes a promise not to sleep with anyone else, but if you don't want to sleep with them anymore, that kinda puts them in a bit of a weird spot. This is why you need to be sexually compatible in a relationship. Is continued asking for sex in a relationship all that different from a woman asking a man to go shopping over and over again until he actually wants to go? In a lot of ways you have to think about the other in a relationship. That being said, feeling like you should have sex with him, without wanting it yourself, is a pretty good indication that the relationship is done. You made the right choice in breaking it off, but don't hate men, thinking "all they want is sex". I know of a few guys that were in your spot as well.