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My girlfriend is bisexual. In her first and only other long relationship she was in a open couple situation where both had sex with whoever they liked. She even had a 'couple' relationship with one of her good female friend for a couple months at the same time. Then, the relationship stopped when the guy fucked her friends and hide things.

After breaking with him, she went overdrive for 2 years.

Then she met me, and we had a child a year later, then another and a third. So now at 40 and 35, we have child of 4,6,8. We were seducing virtually other persons, while being exclusive in the bedroom. It wasn't clear at the time she wanted to be non-monogamous, since our first child came in a few months after we started being official dating. Then when my GF body lost shape because of the first children, she got jealous, and wanted us both to stop all extra couple activities. I dropped 90% of my friends base, since they were all female, and my girlfriend wasn't confortable with it, since a good part had flirty messages.

Now that my girlfriend got back in shape, she's opening her horizon again. She would like I let her see a women alone, so she can fulfill her need of a women, but not in my presence, because she says it completely different while a men is in the room.

She says she is totally capable love for me while seing a women, and differentiate love and sex. She says she tried a few times to find a women for us, (I wasn't included in the process), but no success.

Options she proposes:

1) We stay exclusive, she will see how it goes, maybe OK, or someday she's going to break up because she will need this.

2) I stay exclusive to her, she see women by herself

3) I am able to see women as well, but she then can have sex with men. She feels that if i have sex with a women, its getting sexual experience she could give me(being a women herself), so she should be able to go out and have sex with a man, sexual experience I could provide her.

4) Swigers and threesome seems annoying to her. For now it's not considered. I do not know why.

I'm wondering if I should just let her have this fun. Anyone in my situation?