Justin Theroux's rep confirmed to People that he and Jen are engaged, "Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage."

Jen, 43, and her actor-screenwriter beau Justin, 41, have been dating since May 2011 when they met on the set of their movie ‘Wanderlust.’

JEN & JUSTIN'S DOUBLE DATE WITH GEORGE CLOONEY

This will be Jen’s second walk down the aisle after her marriage to Brad Pitt ended in 2005.

CELEBRITY ENGAGEMENTS OF 2012

Justin was in a long-term relationship with costume designer Heidi Bivens previous to dating Jen.

CELEB COUPLES DRESSING ALIKE

The 43-year-old actress is currently in North Carolina shooting her next film ‘We're the Millers’ with Ed Helms and Jason Sudeikis.

WATCH JEN ANISTON'S VIRAL SMART WATER VIDEO