Why is it when i date guys i dont fancy them anymore?

I get bored with the relationship too, I don't know what to do about it. but my boyfriend and I talk every night and text all the time and are together whenever we can. I think that helps because it doesn't make me think of other guys and he makes me happy. Find a guy that you really like and can see yourself being with. maybe the guy you have is the wrong one and your heart is trying to tell you not to settle because you haven't found the right one yet. Good luck.