Oh, my goodness,
I really can feel for you just now. What a time you are having.
I hate to say what another aber has said, but my ex did that to me years ago. My Son was recovering from an illness and he blamed the illness of my Son on the fact that he could not cope. He went for a week and unknown to me, there had been another woman on the scene for a few months. He denied it at first, but it all came out weeks later.
It could well be that he has been unable to cope with the recent stress but hey, we, as Mothers, all do it without a complaint. I was also left with little money, just a house and a mortgage.
I really do hope things work out for both of you but if not, then he is not worth anything.
A few years later I met the most wonderful man, married now and so glad my ex walked out the way he did. Just hang in there. xxx