Trying to think of her main complaints.

Nagging
Being miserable
Pushing her away physically - unless sex was involved.
Didn't help with housework
Acted single - going out with friends etc.
Wasn't financially responsible

W 39 Me 33 M 9yrs
8 year old Son
ILYBINILWY - Dec 12
W moved out - Jan 2013
OM - Jan 2013
I file for D - May 2013