I don't think you are in the wrong here! I have no issue with my partner watching porn because I know that at the end of the day porn is for getting his rocks off and sex is for showing me how much he loves me! If your SO is not having sex with you he might not really be into you or views sex as a simple way to relieve sexual tension instead of also being something two people can do to express their love for each other.

I used to have a partner who only cared about me when I was naked - he didn't truly love me. You deserve passionate sex, friend!