Liam Hemsworth and Gabriella Brooks are engaged! The Isn't It Romantic actor, 35, and the model, 29 - who first sparked romance rumors in December 2019 - announced the news on Friday, September 12, as she posted a series of sweet Instagram photos of the couple, showing off her stunning engagement ring. Brooks included a black-and-white shot with Hemsworth as she flashed her ring and gave a close-up look at the diamond sparkler in another slide.