Wow. I am not sure how to best handle this if I were in your shoes. However I will say that before you create a back story for all this talk to him about it. Porn generaly is very distorted and can be very harmfull to relationships. The fact is that you should be enough for him and it likely hurts you to think he isn't satisfied with you.

Talk to him about it. Tell him how you feel.

Good luck,
Bearwolf102