Hi Michelle!
Yeah, it's definitely been done. Don't remember which stories, though. I'm quite sure, all stories that had LnC in a relationship at the time.
Hmm... goes hunting in the FF Database
I is for Illusions by Pam J!
http://www.lcfanfic.com/stories/2003/iisfor.txt Can't believe I didn't immediately think of it.
Michael