so i seperated from my ex 7 years ago since then he hasnt given me any money towards the mortgage. Actually left me in a mess initially to pay it on my own. But i managed and now in a position to take it over offically myself. Im hoping next year when my current term is up to look to buy him out take his name off it. Can he ask for half of the house considering he hasnt paid anything towards it in 7 years?