Not Quite Deflowerd(Slinger)

Achievement Unlocked: Not Quite Deflowered

Have oral or anal sex for the first time, let’s see if you can manage to remove the “not quite” by the end of the day. OR
 * +1 Libido
 * +1 Charisma
 * New Quest: The Throes of Passion

Reference
Unlocked in Chapter 30 "Sleepy Melodies and Creepy Witches"