Rule No. 1 for watching porn should be to not take it so seriously. Lexi Lovetwat and Johnny McSpankpants are not their real names, and in that view none of it is real in the truest sense of the word. Sure, they are doing real acts. But they are still actors making a movie, albeit with a lower budget than most of what Hollywood puts out and with a lot less story.
It's somebody's daughter, just like every girl is. That doesn't stop you from having sex (at least it shouldn't) and it shouldn't be the main reason for not watching porn.
I have to say that I don't like the fact that Sex Addicts Anonymous got involved, either. Whether it is AA or any of the other affiliated groups, I don't like them because the first step is admitting that you have a problem and that you are powerless to overcome it. Obviously not, since his ex isn't the one that made him stop watching... he is. He could have done it at anytime.
Long story short, this guy is a total douchebag. And that's my final thought.
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Dog is God spelled backwards. Think about that!