***This is a long story, if you’re just here for the sex, feel free to skip to the * * *
My ex girlfriend was a self proclaimed nympho. Our sex life started out really strong, fucking multiple times per day, sneaking away for quickies in public, and watching lots of porn together. Her favorite videos almost always involved multiple people and gay or lesbian sex. She also liked to share a lot about her past experiences, including times she’d been in threesomes and with other girls. She would lie next to me, stroking my cock and playing with my ass while she described past threesomes she’d been in or people she found attractive. Naturally, the thought of seeing her with another girl really turned me on.
One night, we were hanging out with a couple other mutual friends drinking, talking, and playing games. As the night progressed, things became more sexualized until it was just me, my gf (K), my friend (A), and a girl he was seeing (S), playing truth or dare.