Disgusted by the type of porn my boyfriend watches.

I don't mind that my boyfriend watches porn. We enjoy watching porn together! Yet today I found something that has repulsed me and made me feel like he is like every guy out there and my impression of him has completely changed.

He was showing me a video of two women trying anal for the first time and laughing at how they screamed in pain. In the video they kept saying "stop!" And the guy would keep penetrating them hardly and deeply. It was so humiliating because I am a woman and I felt so bad watching another female in pain. They even held her hands in place so she would not push the guy away. And he watches this pleasantly?

I feel like I've lost all respect for him. I don't even know what to think. I don't think i want him to even touch me. What should I do to forget this?