1 definition by Peter Weinberger
An insult, although not meant to disparage actual gay people. It is a pheneomenon in which a heterosexual man unsuccessfully attempts to woo a woman and winds up being an intimate but wholly platonic friend instead. The man naively believes that if he just sticks around long enough, and shows the woman his sincerity, a romantic relationship will eventually develop. In actuality, this will never, ever happen. Hence the man is the "de-facto gay friend." One can also be a "post-relationship gay friend." In this situation, a romantic relationship ends, but the woman says, "let's be friends; I still want you to be my best friend." The man, somewhat pathetically, agrees to this proposal because of confusion, cowardice, or simple foolishness.
by Peter Weinberger January 26, 2007