Rules for Lusty Wenches

The old lord had shown himself a most gracious host during the last few hours, plying them with rare wines and loading them with rich gifts beyond what they'd asked or what the Mouser had purloined in advance, and even offering them other girls in addition to Ivivis and Friska - benison which they'd rejected, with some inward regrets, after noting the glares in the eyes of those two.

- Fritz Leiber, The Lords of Quarmall

In every Fafhrd and the Grey Mouser story that I've read (admittedly, I haven't come close to reading them all) there are exactly two major female characters. One of them always ends up with Fafhrd, and the other with the Mouser. It's something of a staple in pulp fiction that winning the heart of the beloved is part of the 'treasure' that the hero acquires for his success. Where would Indiana Jones be without his Marion Ravenwood? Or John Carter without his princess waiting for him back on Mars?

This doesn't really happen in D&D, though. I remember thinking for a long time that the woman on the cover of the 1st edition DMG is a lusty babe in need of rescuing, but she's actually a member of the party. But could we incorporate some sort of rules for wench-wooing into the game?