From the marriage therapist to the matchmaker, what are their strategies for coping with petty grievances?
Paul C Brunson, 50, co-host of Married at First Sight and Celebs Go Dating, and head of global research at Tinder, has been with his wife and business partner, Jill, 50, for 32 years, married for 23. They have two sons, aged 10 and 13.