Me (25M) and my girlfriend (25F) have been together for 2 years. Since the beginning of our relationship, she casually mentioned having threesomes with women we met a couple of times(she still does sometimes). I wasn't even aware that it was an option at the time, but you know, the seed was planted. When I brought it up the first time, she kind of freaked out (she thought I had one of her friends in mind because we had been hanging out with her friend then). She told me that we could do it, but with a stranger, and dropped the topic there. (This was like 1.5 years ago). After a while(months), I brought it up again while we were chilling on the couch. She was uncomfortable and scared by the idea. She thinks having a threesome will destroy our relationship (she felt jealousy). I tried to reassure her about my love and why it wouldn't ruin our relationship and I told her we can set any boundries that she feel uncomfortable about. She said we'd see in the future and we dropped the topic. And that made me feel like this isn't a settled topic. After a while (months), I brought it up again, but she firmly rejected. I respect her and her decisions, I won't push her. But I feel that she wants to do it but is really freaked out because she thinks it will hurt our relationship. She is bisexual, although she has never experienced it (except for kissing), but she accepts that she's bisexual. She likes some women’s body types. We've sent eachother NSFW stuff on social media, watched threesome porn together. She doesn't have any problem with me looking at women. She feels disgusted by the idea of MFM (she mentioned it once), although she made jokes about having MFM. Since the last time she rejected the idea, I have never brought it up except for a few jokes. I’m trying not to push and wait, maybe she’ll feel warmer about the idea. What do you think? Am I wrong about it? How should I process it? Thanks for your comments.