The saying goes that a man needs sex to feel loved whereas a woman needs to feel loved before having sex. Kind of a chicken and egg senario.
I too have had the neglected, bottom of the totem pole feelings before my M fell apart. I would say that physical is a primary LL for me. I just kind of accepted that my W was often too tired, but after the bomb, I realized that if we were to reconcile that this would be something I would want to work on together through counseling.
You deserve to feel loved in your M. I hope you aren't just sticking around for the benefit of D7 as your misery will enevitably rub off on her. The best thing for your daughter is to see both her parents in love with each other. I suspect your W still loves you as you do her. It is just going to take some time and I wonder if the 2 of you have agreed to any sort of counseling or Retro weekends?