While I don't mind that it's watched occasionally, even often, I do mind that it's done often enough that it has decreased his sexual appetite and caused a lack of sexual activity between us. When he watches porn, he doesn't have the ability to enjoy sex with me, or the desire to try at all. 

I have a high sex drive and realize this so I am patient and understand going a couple of days without, but if those couple of days turn into a week or more and I find that porn is consistently being viewed throughout, it rules out the idea that he is not as aroused as I am and leads me to believe that porn is preferred over me. This concern is validated when porn is watched while I am available. I find that if I fall asleep at any time he turns it on, and if I go to the grocery store or upstairs to cook dinner he turns it on- even if I'm just gone for a few minutes.  In addition to this, when he does find the desire to allow me to blow him or have sex he rarely finishes- never on the days he watches porn. 

I am not a prude in the bedroom. I will do whatever he wants and have made it known. I never deny him. I invite him to wake me up if I'm asleep. I wear things he likes. I am not in any better or worse shape than I was a year ago when we had sex daily. He does not have an extreme or even abnormal amount of stress. 

How can I see this any other way? I must be the issue. He must just not be attracted to me anymore and I should give up on any hope of a sex life in this relationship, right? Any other advice?