Appearing totally normal, blank or inappropriately cheerful in response to stressful life events is the only thing that has led me to consider official diagnosis so that NHS staff have an alternative non-judgemental understanding of my behaviour.
I'm good in a crisis (disassociated) but I collapse weeks or months after.
I have 2 diagnosed ASD DC. There is abundant evidence that I have always been autistic but have collected other diagnoses - depression, eating disorder, anxiety, one off psychotic episode etc.
So maybe I'm undiagnosed autistic and I'm the genetic link to my DC autism. They didn't have a good time in education but despite that are fine young men. Sure they have difficulties in line with their diagnostic issues but they are good people. They are not mean or cruel or selfish.
My ex is just a cunt. He has been that way for a long time. He cheats, he lies, he sees himself as the victim. He used to compete if I was ill - I was in hospital for a week following C-section with DS1 but returned home to an overflowing laundry basket etc because DH had hurt his back which meant he couldn't pick up our 5kg newborn and I would have to manage on my own.
He's living his best life now I have sole responsibility for the care of DS. All his issues have melted away. He may have met diagnostic criteria whilst married but now he is firmly NT.
But whilst we were still together I would have given anything to believe that he was undiagnosed autistic. For there to be some other reason for his behaviour other than he had seen my vulnerability and taken advantage.
The vast majority of ASD people are not selfish - or incapable of learning how to use the washing machine etc. I've taught my DC how to this, how to cook simple meals, household tasks, gardening etc.
Some people seem to suggest that their undiagnosed DH have a responsible (people facing with a communication disorder) job but can't do this. I call bullshit. To police your boundaries you have to stop being so gullible and to know when your good nature is being exploited.