Most Helpful Guy
Have respect for him and for yourself. Don't like him anymore? Or have you simply tree branched to some other guy or going to? Regardless, if you haven't cheated or not intending on cheating on him then be a adult and talk to him and break up. If you have cheated on him (physically, emotionally etc.) then you should tell him you cheated and go on your way because he's too good for you and deserves a decent woman. Either way tell him.