It is not a "lazy streak" as to why they are with OW it is because OW provides a quick fix, a high, if you will. She supplies a temporary high to help him forget/escape his problems.
It is like an addict who needs more drugs.
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