[F22] my bf (27M) cheated with my best friend (24F) but is more upset about my calm reaction

TL;DR: my bf cheated on me with my best friend, confessed, and now he?s upset because im not reacting emotionally enough. instead of focusing on his betrayal, im focused on quietly planning my exit and moving on with my life.
a few days ago, my bf broke down and confessed that he cheated on me? with my best friend. he was crying, saying it was a mistake, begging for forgiveness, and acting like the world was ending. me? I just sat there, staring at him, feeling? nothing. no tears, no yelling, no heartbreak. just emptiness.
I think I?ve been emotionally checked out of this relationship for a while. his behavior had been off for months canceling plans, being evasive, acting like I was more of a burden than a priority so I?d already started distancing myself emotionally. when he dropped this bombshell, it felt more like confirmation than a shock.
as for my best friend, I?ll deal with her when the time is right. for now, im just done with both of them. it hurts, sure, but I dont have the energy to unpack all of that rn. I?ve got a lot going on im launching a new business, working long hours, and trying to set myself up for a better future. that matters so much more to me than their betrayal.
but here?s the kicker: he?s the one who?s upset. he keeps asking me why im not mad, why im not crying, and if I even care about him. he says things like, ?dont u love me enough to fight for this?? and ?why aren?t u more jealous or angry??
I honestly think he?s more bothered by my calmness than he would be if I had screamed and thrown things. it?s like he wants me to make a scene so he can feel less guilty or justify his actions. sorry, but im not giving him that satisfaction.
I?ve already decided I?m leaving. I?ve started looking for a new place to live, and I?m quietly getting all my ducks in a row. rn, I just want peace and to focus on myself, but he won?t stop pestering me about my lack of a reaction. he?s even tried taking jabs at me, saying, ?you?re so cold, no wonder this happened.? (srsly???)
I don?t care to fix this. I don?t care to fix him. I just want to get through this with as little drama as possible and move on.
how do I deal with him in the meantime? I feel like im being forced into a battle I don?t even want to fight.


Source.