So agree with the posts above.
Him being a white Knight, stories of saving his sister and others, sure thats how ye met, he stepped in.
Didn't feel the need to save his children though🤔, something that will no doubt impact them, their father not owning a home, providing a safe base.
He's a bullshitter and he was counting on you.
The humble regret at his "failings".
His digs at you are the real him.
The entitlement to a soft landing for his future.
I would so recommend that you do retirement calculations to show yourself the math in black and white.
Also your children are part of the boomerang generation to come that could be needing to live at home on and off till their 30's as housing and CoL just gets worse.
You are who they need to be solid and dependable.
Don't underestimate how long your children will need you.
It is just awful to be in your early 20's and find a new partner in the new home your parent has, post divorce.
It is a huge sadness for those young people.
My children have friends in that situation and it has caused them such quiet grief.
One thing their parents divorcing, but the new dynamic in both homes, with new partners has and continues to be, really traumatic, for kids that grew up with decent parents in good homes.
I find it heartbreaking to witness as I know these kids a long time.
You don't stop needing your parents in your early 20's.