Happily Married Hetero. In gay and lesbian culture, an individual who does
not share one's sexual orientation
and/or is unavailable due to being heterosexual
and happily married - or at least married - to someone of the opposite sex. May be used disparagingly or in a purely descriptive way.
man #1 (admiringly): "Mmmm, who's that?"
man #2: "Don't bother. He's HMH."
woman #1: "I saw Ace having coffee with
someone new. What's up?"
woman #2: "Oh, she ran into an HMH friend from
college. They were just catching up."