Lorraine Courtney: It's a match made in heaven when successful celebs fall for each other
They were just like any other young couple in love, popping in to each other's workplace to give their support on a big day. Except that when Caroline Wozniacki congratulated her boyfriend at the weekend he had just secured a five-birdie finish and victory at the DP World Tour Championship.
"Wozzilroy" – that's McIlroy's own sugary name for them – are one of sport's newest and possibly wealthiest power couples. McIlroy earned more than £3.5m (€4.3m) from golf last year while his assorted sponsorship deals with companies like Jumeirah and Santander are estimated to be worth about £6m a year.
Meanwhile Wozniacki is the second highest-paid female athlete in the world with an estimated income last year from winnings and endorsements of almost £8m.