Yes, I have told my wife many times that our sex lives have changed dramatically.
Yes, I have told her our sex life is VERY unsatisfactory.
We have not explored ways to change that other then "She will try to do better". Yea, that really works well.
We are an extremely busy couple with 3 boys. I try to help as much as possible. I go to work at 6:30AM so I can pick up all 3 boys at 3 different schools each day. This also allows my wife to coach a sport at her school. I vacumn, dust, do grocery shopping, clean our pool, fix things around the house. I also take the boys to soccer and football several nights each week. I offer to clean toilets, and even do the laundry. In many cases though, she refuses my help, and I think it is because she thinks she might OWE me. She basically is the mother of my boys, NOT my lover!
Also, she thinks she IS addressing the problem. SHe has told me on several occasions that sex is just not a big deal to her and does not really care if she ever has it again. However, she is willing to honor the marraige commitment and have sex on occasion. She has fallen into the "Willingness Trap". Ask a women if she would like to spend a saturday shopping with her girlfriends who "Desire" to shop or if she would rather go shopping with her husband who is "Willing" to shop and it's a no brainer. "Desire" is far better the "Willingness". I am willing to do ANYTHING for my wife if it will restore Desire, but right now I am not opptimistic at all!