Sex and porn/masturbation are not the same thing, I wish people would stop saying that. I also wish people would stop thinking of guys as the only pornwatchers. I'm a girl, I'm married, and if my husband watches porn I find that more hot than anything else, what he's doing, and what it may lead to. Porn can be something you do on your own or it can also something to have a kinky night together. Also, I'm not innocent there either. If I watch porn it's not cause my husband cannot satisfy me, but because I just want some alone time, me and my fantasies. *shrug*
If you have an issue with your masturbating or pornwatching SO then honestly, the issue is you, not your SO. If for you porn and sex with your SO are intertwined and cannot be seperate (IE you need porn to have sex), then again, you have an issue.