It's very possible both. The trauma he may have seen in Afghanistan may have caused him to question many things.

Have you read through the MLC forum yet? I found the stages of MLC to be very insightful.

http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=97846&page=1

Me:49 H:47
S: 16
T:27 M:25
My EA: 2001
His PA: 10/2007, 6/2013
Separated, but H still in house

Find your Shambala: a place of peace and happiness.