Best guy friend is in love with me, I don't like him back :( ?

If you don't like him now you won't be able to make yourself like him. Pity dating him will only hurt you both even more in the long run. If you just want to be friends with him, you have to tell him that straight and up front. It's better than dating him and breaking up later, you'd feel awkward and then you wouldnt be able to be friends afterwards. He can get over liking you if you want to be friends