So there's this dude I used to be in a band with for several years. About 2 and a half years ago, before I was with my current partner, he had a FWB arrangement with her. But what makes this unusual I guess, is the fact that around that same time, I was also fucking his now partner. None of us are fully aware of the situation except me. My partner told me about her and him, which I was fine with. But my partner doesn't know about me and his partner. He doesn't know about me and his partner. And his partner doesn't know about my partner and him. I'm literally the only one that knows the entire connection. I find it quite humorous if I'm being honest 🤣