Should i break up with him?

My boyfriend and i have been going out for a year and a half. we spend a lot of time to gether, but lately we have been getting into a lot of fights over stupid things. i really do love him, but i dont even think im that attracted to him anymore. he said if we break up then we wont be able to be frineds, but i dont think i can loose him. we are like best friends. is it wrong to still go out with him just because i dont want him out of my life?