Yes I think he could be, the thing is with narcs is you will never know the truth of the situation or what he actually wants or doesn't want.
The game is confusion, to keep you perpetually mixed up so you don't know what's real anymore.
The rules of your marriage that you have known upto now have just been ripped up and there are new rules in place that you don't understand. Whether he wishes to discard you, we don't know but even if he does he will engineer the ending so there is always a chance to hoover you back in, he remains the victim, fight that and you are in trouble.
Narcisists do not ever let go of anyone completely and let you live again, they like to control everything.
All he knows is he was devaluing you and you had the audacity to put boundaries in place, he allowed you a glimps into his life with this ow purposefully to show you who's boss and to hurt you.
Make no mistake this will not be the first time he has had 'women friends', he allowed you to see this because you were not providing him with the required attention he needed.
It doesn't matter what you needed, it never did.
You have trusted this man and why shouldn't you have, his mask has been up and he's never really up to this point had to show you the real him.
Well this is the real him and believe me their masks can fall a lot more.
The feeling at first is like any other relationship, to feel rejected hurt and angry when your partner devalues you or discards you but for you to fight it or think you are on an equal footing with one of these phychos is very dangerous, to expect remorse, respect or an apology is out of the question even if he wants to return home.
Eventually you will learn the safest place to be is away from them, hopefully with them not thinking about you.
It is difficult to explain when you are only at the beggining of this journey but believe me it is not a fight you should undertake, no it is not fair or reasonable but you are dealing with someone who has a different rulebook to others.
You probably don't want to believe any of this and I hope to god he doesn't inflict too much hurt on you but find out what you are dealing with, knowledge will help you.