I think you should just say I am not going to be your friend.
you should just tell her/him to stop bothering you
You should tell him to get lost.
you should tell him/her that you like him/her but as a friend and don't be snotty be a nice person and tell them that maybe someday you could be more but as of right now you just want to be friends
Tell him/her that you want to be friends again. Not that hard.
tell her that you want to be just friends, then flirt with her loads and loads
it ain't worth fallin out over so just tell her not to do it again
I think that if this person is a true friend your feeling for one another should surpass whatever you are going through.
Just tell them to get along again. Or tell them without their friend, this wouldn't have happened. Or if this includes you, apologize. It's never too late!
Just tell her why you were mad and why you want her back (as a friend)
tell my friend sorry and tell the truth
say ignore them if they do it again