Do you know anyone living with their ex-husband and feel like the property is keeping them 2gether but want to

Im living with my now ex husband and when we got our divorce the attorneys asked what we wanted to do with our home. We wanted to sell it and do to the market we are still in it which is so strange. He started the process to buy me out and changed his mind before the divorce was final so thats why im still here. He told his attorney that Im still responsible for half of the mortgage and I can not really afford to pay two mortgages also another reason of being here. Im considering walking away and whatever happens, happens this is holding me back and i am so miserable living with an ex husband