How absolutely dreadful OP.
Your poor son.
How completely unforgivable.
Your son will never forget this.
Well done for standing by him.
Get all and any paperwork, payslips, pension, house deeds, together for the solicitor.
Your husband is one nasty piece of work.
Be honest with people, tell the truth.
Shit husband and a shit father.
Keep talking to your son stressing this is all on his father.
I would NEVER attempt to forgive this.
What an awful man to wound your son so deeply.
Thank goodness you have your family for support.