Ok - so the below seems pretty consistent with your goal, I just hesitate a little with that last line in case it triggers the "it would be too much work" reflex in H:

Dear H, I'm so sorry that you feel your life has run off course. I truly only wish happiness for us both. I understand that you want to simplify your life and don't want to work and live in different places.

Of course you are free to make your own choices. I respect your wishes and if you file for divorce, I won't stand in your way. But divorce isn't what I want. I love you and I hope that we might still be able to save our marriage.

H 37 Me 36
Together 15 years
Married 5 years
No kids
BD Apr 2014
H moved out 2 Jun 2014