Congratulations to Jennifer Aniston who is engaged to boyfriend of 15 months Justin Theroux!

Theroux, 41, popped the question on Friday – also his birthday – on the set of their latest film, We Are The Millers, and Aniston, 43, happily said yes.

“Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage,” his rep told PEOPLE.

The cute couple met while filming Wanderlust in May 2011 and soon became inseparable.

Unfortunately Aniston’s father, soap star John Aniston, failed to hear the news from his daughter, instead learning about the engagement through a celebrity gossip site, before giving the his seal of approval. “I think they make a wonderful couple.”

Do you think Jennifer and Justin make a wonderful couple?