No one is asking the really preliminary question here:
How was she BEFORE you got married? Same? If so, what made you think things would change? The whole premise of marriage, I believe, is to be with someone you know well enough to be able to deal w/ all the shit. I have a hard time believing that she became frigid the day after your wedding night/honeymoon, so ya know......there's that saying....."LOOK BEFORE YOU LEAP".
In a much less likely event, she may be fucking around too, so she doesn't have the energy to........well.......do stuff with you. Any signs of that?
Just my thoughts......
-rvd_brock