Generous Simon Cowell has paid off the $162,000 mortgage of a couple whose cancer-stricken three-year-old daughter has melted his heart. TV’s Mr Nasty showed his caring side by vowing to be a “guardian angel” for little Madelaine Stoen and her family. Since the girl was diagnosed with an agressive form of cancer, the family has been struggling to pay their bills. (read beautiful story below)