I'd be concerned about him saying looking at pictures of you makes him angry. There's definitely something wrong with him there, especially with this being a relatively new relationship.

Both of you can check out "In the Shadows of the Net" by Patrick Carnes (and any of his other sex addiction book), which covers sexual addiction using the internet.

I also echo bob1a's sentiments about pornography being extremely exploitative and the damage it causes to those in the industry. Check out the documentary "The Price of Pleasure."