"Get over it" is not an appropriate response. To anything. Ever!
CinnamonGirl, if it's causing a problem in your marriage, then you must confront him again. I would suggest marriage counseling. I know someone whose marriage was broken up by porn addiction and frankly, that's just not a good excuse. Your husband has other issues that he must deal with that have nothing to do with you. You're obviously open-minded and that's good! He should appreciate this and work with you but instead he's being secretive and hurtful. Don't let him rob your marriage of the intimacy you deserve. Do something before it's too late, especially if you have children. What a horrible legacy to leave - your parents divorced because your dad enjoyed looking at naked chics online more than your mom.