I always see on here when a DH leaves his wife out of the blue, all the posters say "He has another woman...wait and see...she'll come out of the woodwork soon"
And very often, it's true.
But some men must just leave...right? A very good couple friend of mine and DH's has broken up because he's suddenly said he's not happy and is leaving. He moved out immediately and stayed in his office...within a week he had a rental flat.
We...the friends and other mates, are all shocked. His wife is in absolute bits and we're all supporting her as well as we can.
They've been married for 25 years and their business has JUST begun to be successful....they're only in their 40s and should be enjoying their time with some money etc but he's just gone and left!
He says it's because he loves her but not in "that deep love way" 
I asked my DH if he thought there could be another woman and he says he's almost positive not...that the man doesn't have time for an affair....
It's so awful and has really upset everyone...her the most of course! But we all feel very sad too. Do some men just go? No OW?