My gf (22F) and I (26M) are thinking about doing a mmf threesome. It is something that she has always wanted to do, but has never gotten the chance. I love her so much and I want to be able to do anything to help her and fulfill her fantasies. The only problem is I am pretty insecure and while I don’t love the idea of another man having sex with my girl. It’s something I feel like I would be willing to try for her (and who knows maybe kinda like it). So we started talking about it more in depth today and making boundaries. She is very open to any kind of sexual acts as she is very secure and doesn’t really have any boundaries, so when she saw my boundaries she got upset by one in particular, and that is that I wouldn’t want her to praise the other guy at all. Due to my insecurities I made that a boundary for me because what if I don’t like the experience and don’t want to do it anymore, I don’t want to have to think about what she said about the other guy and live with that rent free in my head about what she said. She argues that she takes pleasure in praising people and that she would need to do it to make everyone comfortable and that she wouldn’t be able to not do that. Idk I feel like a jerk for making that a boundary for me for at least the first experience, just in case I don’t like the experience but if I did like it I would be willing to possibly change it. Idk what to do it has caused a lot of tension with the subject and cause a fight as we are both set as to what we think. Anyone have a similar situation or any advice as to what we can do to get passed this?