I have noticed a few of you stating that your narc partners are polyamourous so I googled it and it appears that polyamory implies consent, trust and open communication. The narcissist does not get consent. he/she will cheat, lie and betray. Multiple sexual partners are to attempt to fill a void in his/her self esteem and to feel superior in conquering others. About power and control.
Good point. Polyamoury is an agreed upon facet of a relationship, as you say it involves the trust and consent of both partners. If one partner is sleeping with or forming other relationships without the knowledge and/or consent of the other partner it's not polyamoury just cheating. Although it would kinda make sense that a narc would use it as an excuse for behaviour that others consider unacceptable.
I have a very similar problem right now with a narc partner that just broke up with me again, six times now over two years. Pretty much any time he blows up he disappears for a month. His push for group sex made me feel so low that I am finding it hard to recover after being away from him for a month now. He was verbally abusive and I know it has to be over for good but I can't stop feeling like I am being hit in the chest several times a day when I think of him.
When does this stop, what can i do. I have tried a co dependency group, and my therapist is really not addressing the "why" but focused on what I should be doing to get better. I know all the "right" things to do and I am doing them but i do not see any light out of this pain.
Not all narcissists cheat. I had suspicions with mine but I was never able to prove it. To my knowledge my narcissistic ex never cheated but she did flirt with other people on a few occasions and told me about it. I believe she did this to make me realize that other people wanted her and that in turn made me do more things for her than I was already doing so I could keep her. It's a very sickening and manipulative thing to do to someone. Sometimes I wonder if she's coming back. I try my best to be an open, honest, and compassionate person but sometimes I wonder if she tried to come back if I would take her back just to get revenge by doing EVERYTHING she used to do to me. It pains me greatly to think like that.