People who accuse others of infidelty, very often the ones being unfaithful. Its a very interesting phenomena. The more he accuses you... the more you can feel confident that he is doing this.
The p 0 r n is very concerning. Have you viewed the p 0 r n? What type is it? Is it particularly violent or degrading? A p 0 r n addiction, as with any type of addiction is concerning as it is usually a sign of a disturbance. p 0 r n is probably the thing you don't want an addiction to as it is so negative and distracting. It has a very negative energy attached to it and teaches the very opposite of intimacy. Sex becomes brutal and detached. There is no intimacy or tender feelings. This is very unhealthy for you, and for him as a human being.