This is my first ever post so hope im doing it right??? I have been with my girlfriend for 12 months now. The other night she said she wanted a 3sum with another girl. I told her i would love to watch her and another girl. She said she would find it a turn on for me to join in with them both. Now im just wondering if she is saying this because she thinks i would like it not that she would find it a turn on??? Never had a 3sum. How many girls would find having a 3 sum with there boyfriend a turn on???