Read, read, and then read some more ReineD comments. They are spot on. Bolt and run is a common response. I have a good marriage, but the pain and emotions of the divorce are always there, after many decades.
Have you looked at what the porn is trying to compensate for? Probably need an individual therapist to lead here, but something went astray. It's like hitting the candy jar because meals were not satisfying. Fix the meal situation and the candy jar's appeal will quickly fade and your life will improve immensely.
