Celebrity Jennifer Aniston Engaged to Justin Theroux The actress accepted Justin Theroux's wedding proposal on his birthday Friday, his rep tells PEOPLE By Julie Jordan Julie Jordan Julie Jordan is an Editor at Large for PEOPLE. She has been with the brand for 25 years, writing cover stories and features and managing special issues including the Beautiful Issue and Sexiest Man Alive. People Editorial Guidelines Published on August 12, 2012 07:20PM EDT Photo: Kevin Winter/Getty Jennifer Aniston is getting married to boyfriend Justin Theroux! “Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage,” his rep tells PEOPLE exclusively. Aniston, 43, and Theroux, 41, an actor-screenwriter, have been dating for more than a year. PHOTOS: Jennifer and Justin’s Whirlwind Romance The couple – who both starred in Wanderlust – were first spotted together in May 2011. “They are great friends,” a source told PEOPLE at the time. During an interview on Good Morning America the next month, when asked about her personal life, Aniston couldn’t hide her emotions. “Yes, I’m very happy. I’m extremely lucky, and I’m extremely happy,” she said. PHOTOS: Cooler Together: Jen and Justin’s Coordinating Style