Help !my bestfriend is inlove with me !?

So my bestfriend Eduardo told me hes inlove with me and if we can go out .i dont feel the same ,but before we were friends i had a crush on him .i dont want to hurt him ,but i think it might ruin our friendship .and i dont want that to happen. he got mad when my other bestfriend marvin called me hunny bunches .and it caused a big fight ..what should i do ??? Plz help