Dude, my Baldur's Gate II character just totally had sex in a cave! Twice.
I was not aware it was even possible for this particular lovetalk of Anomen's to trigger in a dungeon area; possibly it was because we were still within the confines of the city. My character is a paladin, so I tend to use the pirate cave behind the Sea's Bounty tavern as a stronghold until I can be bothered killing Firkraag. (It's a great temporary refuge for fighters, druids and rangers as well, since theirs are inconveniently out of town.) Hence, cave sex. Possibly Anomen told her to think of it as a love grotto [1].
The thing of it is, it's not a very big cave, especially with six people in it. I can only imagine that Keto and Yoshimo, uh, entertained each other as well, leaving Xan stuck with babysitting Minsc, Boo and Lilacor [2].
I am a terrible person for thinking that with all the extra relationships and romantic encounters that have already been written for this game, it's a dreadful oversight that nobody has yet added an orgy mod.
[1] First person to name the reference wins a no-prize.
[2] Mod NPCs for the win.
