John Mulaney 'lightened the load' amid Olivia Munn's cancer battle Olivia Munn has explained how her husband helped her through her cancer battle. 30 March 2026 John Mulaney's humour helped Olivia Munn to navigate her cancer battle. John Mulaney and Olivia Munn tied the knot in 2024 The 45-year-old actress - who was diagnosed with bilateral breast cancer in 2023 - has credited her comedian husband with lightening the load during her darkest moments. Speaking on CBS News, Olivia said: "There's no better person in the world to me than my husband. He is - I mean, you've met him.