Quote by Dancing_Doll
First you have to find out if she also shares this kink and if she is interested in doing it if she's part of the primary couple.
Basically you just have to ask her... start some fantasy role-plays, maybe watch some threesome porn with her and talk about it. Or you can say "hey, my friend just told me this story about how he and his girlfriend just had a threesome..." to break the ice in a more cautious way. It's not going to ever "just happen" until you can have an honest conversation with her and set the ground rules.
Then if she is willing... you can try finding someone online, at a club/bar, going to a fetish, swinger or sex party, hire an escort, or try to hook things up on a vacation when everyone tends to be a little more adventurous.
As usual, DD was right on target. Talk, Talk, Talk, then Talk some more. Make sure you both know what you want and what you expect from it and how far you are comfortable going. And if you decide to do it, make sure you pay attention to each other and not just the 3rd person. I am friends with a couple who have threesomes with other women but they have rules where the girls can be together, but the man and the other girl can only do oral. But they really enjoy it. If you have threesome make sure this is all spelled out before hand.
For your first time, doing it on vacation can be great. Maybe to an Adult Playground resort like Hedo or Desires. That way, you will be with like minded people and you dont have to worry about anyone you know finding out and if it turns out that you were not comfortable with it and it is just a one time fling, then it can be forgotten. And if you did enjoy it and want to make it a part of your sex life together, you will have more confidence pursuing it at home.
