Alfonso, 52, met the man whom he refers to as 'my future son-in-law' for the first time last summer, when the couple spent a week holidaying on the Hawaiian island of Oahu, the place where Nicole was born and spent the first six years of her life.
Cheryl Cole was unceremoniously dumped as a judge by studio bosses at Fox, Rupert Murdoch's US network, and Nicole was promoted to the judging panel.
She will sit in the most coveted position - next to Cowell - when the show is broadcast in the autumn.
Nicole and the Brit had an on/off relationship for eight years from 2007, but went their separate ways two years ago. I want to thank you all for the love and support during this tough time. #Team LH #bestfansintheworld."Since their split, he has been linked with the likes of Rihanna, as well as models Barbara Palvin and Winnie Harlow.
Meanwhile, Nicole started dating Bulgarian tennis player Grigor Dimitrov last year and they have put on a very loved-up display on various occasions.
Hamilton's world is the never-ending travelling caravan of F1, taking him from Silverstone and Abu Dhabi to Australia and beyond.