Hi Jacko
I wish that i had an answer for you, like others have said, now is the time to indulge yourself, and i don't mean with food, have a think about how to reinvent yourself, a change if image, address your weight, at a time like this (regardless of who left who) you need to be as confident as possible, i left a 10 year relationship, had a drastic haircut, lost 3 stone, and 6 month later met my husband, was married within the year, now have 2 Lovely kiddies and 10 years later i am happier than ever (Maybe a bit too happy) hense the weight gain.
What i'm saying is..... do this for yourself, and for your future....
Turn your face to the Sun and the shadows will fall behind you
Sam x