Sorry to hear how things went. Is there any reason why you showed him DR? That's for you. However I don't think it applies here.
Has he been violent before? You have two choices, either confront him again and tell him how you feel (no books) or you or he leave since you feel uncomfortable.
Aside from the porn, did anything else unusual happen lately?
If he won't go to a therapist, then you should to sort out your feelings and get some support for yourself.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.