He asked me out but I know he doesn't like my what should I Say?

I have a best guy friend he is amazing, he cares for me so much but he fancies me, everyone knows he does he has asked me out 5 times. He is so protective over me put will help me with guys I like. He is always telling me how beautiful and how kind and caring I am. But I like this other guy, one of his best friends but the guy I like , asked out my other best friend but she said no. She doesn't want to go out with him. My guy friend kept asking the guy I like why I wouldn't go out with me because I'm much better than the other girl. And he said I'm really hot but he won't go out with me because I don't talk to him enough, so I started talking to him and it got better but tonight my guy friend rung me up and said that he, was talking to him again asking him why he wouldn't go out with me and he said "alright, ask her out for me" but I know by the way that he said it that he doesn't want to go out with me even though he has been ignoring my other best friend that he asked out. What should I tell my guy friend to tell him? xxxxxxxxxxxxxxxxx