I would be included as well. We talked about my concerns. She reassured me it's just sex, just like every other time. She wants to try DP this time around which is her real fantasy about bringing in another man. She does not want a couple this time around because she wants to be the center of attention. Guess what bothered me is that she had ran into someone at her work,and had been messaging and flirting without me, since before we only talked to unicorns and couples through a group chat with all parties involved. I brought up the idea that we can find an attractive stranger for this and she seems excited about it.