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Jennifer Aniston and Justin Theroux are engaged, a rep for the actress has confirmed. Theroux's rep added, "[Justin] had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage."

The two began dating in May of 2011 shortly after meeting on the set of the comedy Wanderlust. This will be Theroux's first marriage and Aniston's second -- she famously married Brad Pitt in July of 2000, but their marriage ended in 2005 when Brad became involved with Angelina Jolie.

Check out our favorite shots of the couple in the gallery below!