[runsonmagic]

It's called polyamory. There's already lots of solid frames there.

If you set that frame from the begining - that you want love, intimacy, affection, and FREEDOM - and that you can both have all those things without exclusivity - then her jealously will seem petty.

I remember being in bed with a girl and telling her I was getting involved with someone else at the same time. She asked who and I told her. She said, "aw! I love that girl. She's a good pick." Both of us were versed in the language of polyamory, and had set that frame from the start. Still friends with both girls.

Polyamory has a LOT of pitfalls... if you don't have game. Often people will use it as a way to bounce from partner to partner and avoid real intimacy, or a girl will say she is "polyamorous" when she is really just "polyfuckorous" to avoid feeling like a slut. If you don't buy the hippy free love utopic stuff that comes out of polyamorous communities, you'll be okay.

See also, Owen Cook's (RSD) material on threesomes. Very solid.