MILBHWF
Kind of like a 'MILF' but instead of just carrying on a brief or periodic series of one-night stands... something much deeper emerges. So she has become a 'Mother I'd Like To Be Happy With Forever'.
"Dude, who cares? She's just a MILF."
"I beg to differ, my good man. She's a MILBHWF."
"You're gay."
"No I'm not."
"I beg to differ, my good man. She's a MILBHWF."
"You're gay."
"No I'm not."