Justin Theroux has finally gone down on one knee and has popped the BIG question to Jennifer Aniston- 'Will You Marry Me?!'. "Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend Jennifer Aniston, accepted his proposal of marriage", Justin's rep tells in a statement! Awww, finally! The couple met during the set of 'Wanderlust' a couple of years ago, and have been officially dating for more than one year. We're so happy for them, Jen's gonna be a beautiful bride! (people)