Let's assume there is a girl who has a male friend from her childhood. Growing up together, they became really close and eventually traded their virginity and would practice on one another. They've never dated anyone else during that time and only see each other as friends, nothing more. One could say they were fuck buddies.
The girl now has a boyfriend (the guy, with a girlfriend) and continues to do things with her close friend. Some of the things they might be doing together:
Shower together
Watch porn together
Do each other 'favours'
Practice kissing
Practice on each other (to perform better with their partners)
Practice using/trying out toys
She sends nudes or suggestive photos to him (sexy outfits, girl with boyfriend POV)
She puts on a show for him (striptease, lapdance)
Sleep or cuddle together
Holding hands while in public
Going out together for a smoothie
Now imagine you are currently in a relationship with the girl/guy, where would you draw the line?
Edited by Pilot, 27 April 2013 - 10:05 PM.