I was in a similar sich myself when I first joined this BB and it made me miserable. I have two thoughts for you.
1)Remember that as a female of the species there is really no rational reason for you to experience the emotion of "jealousy". There is no possible situation in which it will ever do you any good. In particular, you are just conspiring to degrade yourself by being in any manner "jealous" of porn because you are WAY better than porn.
2)The way to get beyond the HD/LD mindset in which you feel like the one who is the underdog because "he doesn't want to have sex with you" is to remember the maxim "Everybody has a sex life but not necessarily one in which you would like to participate.". You could easily level the playing field in your relationship by telling your H "Since you have chosen to indulge your need for a fantasy/MB oriented sex life at this time, I have decided to do the same. Please respect my privacy in the computer den when I put a pink ribbon on the doorknob because I shall be using my vibrator in conjunction with chatting with men on the internet. I would just look at porn like you but I find that as a female I need the auditory brain stimulus provided by dirty talk. Did you remember to pay the gas bill this month? Your mother called and she wants us over for dinner on Sunday.".
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver