Posted a few weeks ago about how my partner (m) and I (f) had a hookup, where my So crossed boundaries.

Took the high road advice and opened up with him how that made me feel, and how we need a break from the LS, to which he agreed.

Fast forward to this week, I agreed to our usual agreement of FFM, so he has been eagerly seeking, however I noticed he was talking to the couple with whom he crossed boundaries with and I asked what they were talking about and he ignored me, then lied to my face and said they aren't talking and that I'm crazy. Sure enough the messages have been deleted.

A bit of info on my previous post:

My so went to another room with the girl " which has always been off bounds *, and claims he just "had a cigarette". Meanwhile all week hes been talking about how good sex and cigarettes are (which we haven't done together). All the pieces are stemming together and he keeps lying to me but small things suddenly.

We had * no issues with previous experiences *, but with this one, him and the girl had too strong of a connection, and I wasn't attracted to the guy sexually.

My so keeps trying to get us to hang with them. I'm so uncomfortable, and feel sick by how obsessed he has been about this other girl.

Everything has been weird and off since then. Has he thinking about her that much? my gut is alarming me that something is off.

I really enjoyed the LS up until now, and now I'm kinda mad at myself for giving the wrong men this opportunity to explore with me. He had never had these experiences until I introduced him to the LS, which wasn't suppose to be a full swap, but my drunk ass tried to be the kinder partner, and he has taken advantage.

Feel like we went from a happy and cute couple to becoming toxic in a matter of weeks. Just in shock, we've been together for 10years now with many experiences. I love him dearly, and really wanted us to find that balance, but I'm actually considering leaving this relationship.

For the first time, LS has ruined my relationship and he doesn't care how I feel.

Does this happen often to couples in the LS? How do I confront him without sounding like I'm nagging or complaining? How do I get my point across....