XH left 13 years ago as having an affair.We are now divorced.XH paid maintenance (decided by him and not through a court order) for DD1 until she was 18 and is continuing to do so for DD2 who is now 16.After an argument last week, he shouted at me that it was time to sell the house as he wanted his half of the money.The mortgage is still in joint names but it has been me that's paid it from my own account and maintained the home completely by myself whilst bringing up the DC.Any advice as to where I stand on this?