This is a followup threat of my previous one, found here. This threat will assume that the information provided there is known. So, apparently the situation is not as over as I hoped or thought. After a while of "all good" we came to talking again last night. When I asked her about her day, she said that the coworker situation was giving her trouble. When I inquired further, she basically told me that she is beginning to realize that she feels more for him than just a friend and appartently he is "confused" as well. (Im not entirely sure wether that means he lied to my face, but I will get to the bottom of that soon enough.) After some talking she ensured me that she does not with to end our relationship and she also does not wish to cheat on me, but the situation is giving her trouble. Ultimately, she is hoping for a situation in which she can have both with me beeing cool with it. She has assured me that she is not going to make a move without my consent (as usual, in the sense that I am fine with it emotionally) but the situation is creating quite some turmoil for the both of us. So, here I am again. I had an extended lunch break which I spend talking to an old friend about the situation and we both more or less arrived at the same conclusion. I am stuck between a rock and a hard place. I can either deny my consent and maintain our relationship, hoping it will last and be enough for her, or I can give the thing a shot and risk all falling apart. (Technically, I could pack up my things, but I don't want that, so thats not on the table.) Basically, it seems that the choice has been made on her side and I have to find a way to deal with it. Can't say I didn't see this comming to be honest. So, now I am looking for input. I have met a couple of people in love triangles (never been there myself yet) and no matter whom I talk to they all tell me the same thing: under the surface it was always a turf war. Not a single person I know seems to have made it work for an extended period of time, not outside the bedroom anyways. Yet, both of them and multiple sources on the internet seem to claim the opposite and its not like the concept is new at all, so I guess there must have been and be people who manage to do it. Does anyone here have any experience with this sort of thing? How do you deal with the jealousy and the exlusivity drive and how did/ does it turn out? I have contemplated to jump into the cold water and, after defining some rules and limits, to place the three of us in a sexual threesome to give the situation an honest shot. I don't mind naked men as long as the focus is on her and I don't think I would mind him. What I am affraid of, is that with this course I run the risk to spark a fire that could spell the end of my engagement, but on the other hand, it also provides the opportunity to eliminate the "what if" magic for the two of them and wake them up to what I hope to be an exclusive future between me an my fiancé. Finally, if they both turn out to like it and I don't, I am no worse off than I am now, so it seems like a 2:1 situation. I considered looking for a different additional partner, but I have a feeling that this guy is at the core of things and unless that barrier of possibilities is cast down I am merely working towards the (prolonged) end of my relationship because the tension does not seem to ebb away. Thoughts? As always, your input is greatly appreciated.