I don't want to load your head with false premise, but you're throwing in the towel way, way too early in the fight.
10 months? How long were you together?
And I'll say this, my (x)W told me she was "numb" for a long time prior to everything coming to a head. Which IS true (2 years), and I don't blame her for it.
And yes, my (X)W DID in fact have a date in mind to end it all.
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11