*raises hand* I know, I know! It's a Father I Want to...I can't say the other word. I learned about MILF right here in HF, before that, I had no idea what that meant! *laughs*
probably because middle aged men are traditionally considered sexy anyway, while a fuckable middle aged woman is a notable occurrence (stereotypically anyway)
Hmmm I think the reason why there is no "filf" is because women are not as fond of derogatory slang as men are and also I think the "mature lover" idea is more of a novelty or a fetish for men. This is talking in heterosexual terms of course. There is just no demand for the acronym unfortunately.