I had a husband who refused sex and affection (went for years without either). Its not just a girl game.
Sex is, after a certain age, not a huge focus anymore, but everyone wants to feel love and affection. I wonder if your wife is feeling rejected because you rejected the WT and she is to bound to it. I hope you can give her some clarity on that one, because it may be at the heart of this. She is taking your rejection of the religion as a rejection of her. I hope you can separate that in her heart. (follow all the romancing advice - make her feel your love emotionally, because she has a mental disconnect that is screwing with your lives.)