Once if he decided to live with another lady, he will continue at any cost. Better to keep quite. This may be only temporary, as most of he guys here do. But he is still your husband and will take care of you. 

If you will do any thing against him, it is fore sure, you lost your husband and you cannot do anything other than he will lose his job and then you will loose husband forever. He will never accept you as his wfie and thus you will get punished for the rest of your life.

Moral of the story: Just keep quite....it is better for you