Karen and Lisa TG/TF/DG
Story by Verrucktzer
Hadn't seen this posted here before, and I don't think the auothor will mind, but I ran across this story, a fairly good one that even has a plot!
http://home.att.net/~nomdreserv/Stories/Girl_Trouble.htm
At first it's just guy to gal TF... then nearer the middle it goes gal to D-gal TF... and menage de trois...
Worth a read.