Tell her about your concerns .. And why you are feeling threatened by her week away. If she is not bisexual .. I can't see there being a problem with her doing something she isn't supposed to be doing. It could very well just two friends hang'n out, and chill'n.
Talk to your fiancé about your feelings about this. Just talk; don't scream and carry on. If you're concerned something might happen, just say so. Ask your fiancé if she is comfortable going on this trip or does she feel forced into it? If you make this a big deal and blow it out of proportion, it will become a big deal.
If your fiancé feels okay about going, has considered your feelings, and doesn't feel that anything would happen and if it did, she would address this with the friend, then let her go. Always keep the lines of communication open. Tell her that if she wants to go, it will be okay with you. However, if she goes and things go south with the other friend, tell her to call you and you will come and get her, no questions asked. And then trust her enough to let her make the decision. Good luck.
This is hilarious.
Do you let your fiance go to work on her own? Or anywhere on her own?
You realize every time she is away from you, but around other people - she is around *somebody* that is attracted to her gender? Whether that person is straight, gay, or bi - it doesn't matter. If your fiance has any wish to have "relations" with someone other than you, she didn't need to wait for this trip.
Sounds to me like you don't trust your fiance. You may want to reconsider your relationship.
Leave them be, I guess? Talk to your S.O about how you feel, but you'll just have to trust.
Umm... I have a friend who was bisexual, she had a crush on me but back off because she knew I was straight!! Do you know the friend? Does she seem to have deeper feelings for your Fiancé? If not, and you trust both the friend and your fiancé then, don't worry...
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