Joker, I hope some of this actually does help you in your relationship. Unless I mis-read your original post and some of the replies, it seems that you and your husband BOTH enjoy surfing porn, and both have some jealousy, trust, and "I want to do it, but I don't want him/her to do it." issues.
You both really really need to accept that the other enjoys erotica. Don't be jealous, don't be secretive. You both have to accept that, just because the other enjoys looking at erotic images, that in no way indicates a lack of satisfaction. One really key issue (and I know I will take some heat for this...) is that while total honesty is an absolute must, total openness is not. What I mean by that is, if he asks, answer honestly. Never hide or lie or cover up. But on the other hand, you don't necessarily have to volunteer every single little shred of information. "Honey, I masturbated today. Twice." You do need a little private space in your head, but never let it become a secret hiding place. I think if you both learn to communicate better, and trust each other, you will probably find that your libido with him will improve, too. Oh, and complete honesty and communication about what turns you on, what is indifferent, and what turns you off... that will go a long way in fanning the sparks in your love life. You just have to grow a thicker skin in the beginning, so you don't have any hard feelings when you are thinking, "wow, honey, I don't like that either. I thought you did, that's why I was doing it..." One of my favorites, though, it usually gets me laughing hysterically, is "Oh, hell, I've thought about that so many times, I love it, I just thought you wouldn't!"