Found a note pad of porn stars

Okay so when I first started dating my now husband he would ask to watch porn together and I was never fully into it but he enjoyed it so we did. Except he would take 30 effing minutes to find a porn star who was “hot enough” for us to watch. Meanwhile I’m laying there like can we just have sex? Like who cares about the porn. Shortly after this I made it very clear I’m not okay with porn. Fast forward years later were married etc. Now I’m not dumb, I know he watches it in his own time but what I don’t see I don’t know. But I came across a very LONG list of porn stars he has written down I guess of girls he likes?? And I sat on it for a few days and everyday he’s adding girls to this list!!!! I’m so disgusted and I just don’t even know what to do. Is this normal???? Like how are you even finding these specific girls and why must you write their names down!!!!!