Hannelore
can I ask...has he had any "TIA" history? Even so called silent strokes can cause behaviour to change.
A scan would show this.Even the GP could not diagnose.
IF so then he may be acting in the best way he can process.
This is not to say that he was not over the top in acting as he did.
You were tested on a level that is very sensitive.Your aging Mother and the marriage bed.
I would have done what you did.
I await the input of the others.But there many facets which if explored may give you peace.
.Mountain ash