My and my other half split up over 3 years ago but we have still been living in the house we own with a joint mortgage, for the sake of the kids/financial reasons. Now he is ready to leave which is long overdue. We bought our first house together when our 18 year old was born, I sold my flat and put down 50% deposit (30,000) on our first house and in the last 10 years my parents gave me some money for a big extension on the house. At the time i never wanted a joint mortgage but more a proportionate agreement to reflect the 50% I paid outright towards the house, but he verbally said that if we split up he wouldn't screw me over. Now I have come into inheritance and he wants me to buy him out and give him half the value of the house. I do not agree that he should have half, as I feel a substantial amount has been invested in the property by myself and my late parents. Plus my children will still live here and need a bedroom until they graduate which is another 5 years. When he leaves I have no idea how much he will actually give me to support them! Does anyone have any thoughts or advice please?