LMS - so glad you started your own thread! A couple of things jump out. Could you fill in a bit of your story, as far as how your marriage started out and what changed? When did the changes start happening, that kind of thing...
2nd....your H is going online, searching for "hot sex", right in front of you?!!? It is time for a boundary. Please do not allow him to disrespect you like that. He can go somewhere else if he has to, but to cause you emotional harm like that is unacceptable. There is a link somewhere on boundaries, I'll find it for you.
Most of us LBS have a lot of trouble with setting up boundaries at first. It's kind of hard, learning a new way of behavior.
Ah ha! The link on boundaries is right above this post, in the links Cadet sent you. I highly recommend you go through all of them.