I have said and been told by others that
we are just friends in various situations. It's usually said at the outset of a relationship that neither party is sure it wants. Or you feel compelled to
legitimize yourself when that statement actually is the truth, because most people can't believe in
opposite-sex friendships.
One I believe is a half-truth that I say is that I have mostly male friends. In numbers, this is true, but the reasons behind the numbers is that I have always been boy crazy and so to curb my addiction, I turn my crushes into friends. This way I surround myself with cute boys.
(See Look, I don't mean to be an asshole or anything, but...)