My H doesn't have a bad word to say either, except about himself.

Personally I'd be honest with your husband. Validate his feelings when you tell him. Even sugar coat the truth about your S by telling your H about how you are helping S

M32 H37
DD1 6 DD2 5
M6 T10
EA 31.08.13
Separated and H moved out 19.09.13
ILYBINILWY 23.09.13
OW 11.13