My H did not tell me, as I discovered it via phone records and his initial response was: It is about time you found it out.
Then he told me it had nothing to do with me, that I was the best wife, etc. I could no longer pretend that everything was nice here and told my FIL exactly what was going on. I felt comfortable doing it and he has been pretty good but it is hard on them, too.
My h has not called his parents in three years.
The Bomb: 08/05 H moves out: 06/2006 H moves back: 01/07 & Out again: 01/07 H moves back: 03/08 & Out again: 04/08 H moves back: 05/09 & Out again: 07/09 Divorced 08-12 Kids: 22, 20, 19