Don't know where to start.
Ex and I own a house jointly with mortgage.
He left the home early 2021 and within weeks put offer in on another house which was accepted.
I stayed in our home and started paying for mortgage solely after 1 month of him leaving.
Few months later he moved into his new, second home.
He has child half the time, so doesn't pay support to us and has never paid towards the mortgage on his jointly owned house since the month after he left.
The last few months I've struggled paying for the house with bills and childcare, so he started paying for the childcare rather than us split it 50/50.
He left his job and started up new business, and now he says he can't afford my half of the childcare.
I am stuck as I would need to sell this house to be able to accept social housing, I can't get out of this situation and I have a big financial burden that I never had any choice about (when he left us here).
What are the options?