Is this the same problem since you first registered here several years ago? Has he ever gone to the doctor to have his testosterone level checked, or gone to see a counselor?
If he is not willing to even try to work at having a intimate R with you, then you need to realize you will be extremely sad and lonely throughout your M years together. How do you have a R with an unwilling partner?
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!