there is absolutely no way to justify this behavior
I am 90% certain my soon-to-be ex has ADHD. Our daughter was diagnosed, years ago. There is evidence of the anger and anxiety that seem to go along with ADHD, in him. All the hints were there for him to be self-aware of his ADHD (i.e. hello? your daughter has been diagnosed?) but his ego was too big for him to have any self-awareness. He had an affair and now wants a divorce.