DP and I have been together 2 years after a long friendship.
DP met a woman at the end of last year who I always had a funny feeling about, they chatted for a while via email/text (shared workplace but limited f2f contact), I commented that it seemed to be overly flirty and it stopped.
She continued to try and maintain contact, but he would blank most messages...
DP said they it was weird, as he has only spent about 6hours in her company and he struggles to see her as a 'real' person, more like a pen pal, but apparently understood where I was coming from.
So two weeks ago DP went on a bender, too much to drink and some cocaine. I was trying to ring him to check he was alive and it turns out he was on the phone to this woman, he had phoned to check in due to to CV pandemic (why???) and it had turned into phone sex (DP totally off his face, her sober as she is 13 weeks pregnant) DP didn't know about her pregnancy at the time but a mutual friend had told me...
Now I know that this woman isn't my problem, I have told her partner and am more than aware that DP is my problem, despite this woman's persistence.
I want to work past this, and although I definitely consider this cheating, and have made it completely clear to DP that if anything even close to this happens again we are done, but I'm struggling to keep the images of the phone call and the hurt I'm feeling out of my head.
How do I process/deal with this?? I don't want to allow it to drive me mad...