Elise Nelson / Us Weekly: Matty Healy's Mom Denise Welch Had 'Bloody Hard' Time Staying 'Quiet' About 'Terrible' Taylor Swift Split (Exclusive) - Matty Healy's mom, Denise Welch, has a hard time biting her tongue when it comes to discussing her son's romance with Taylor Swift. - "Denise is still Matty's mum ...