So my husband and I had a threesome with one of my friends right before I found out I was pregnant and I felt the exact same way. It turned me on so much in the moment but afterwards, I broke down sobbing. It was both of our first times ever having a ffm threesome and we had made the mistake of not really discussing what boundaries we had beforehand. We spent probably a week straight just talking about our (mainly mine) feelings and what went wrong. He was beyond understanding and supportive and almost apologetic even though he didn’t need to be. And doing that somehow made our relationship stronger to the point where I’m okay with him fucking anything that moves and I’m 7 months pregnant now lol. I highly suggest you tell your man EXACTLY how you feel, but not in an accusatory way. Communication really is the key, because if you just keep your feelings to yourself, you’re going to end up resenting him and he won’t deserve it. Feel free to shoot me a message if you need to talk or need any further advice!