The engaged couple have been vacationing at a high end resort in the popular Mexican vacation town, sharing their getaway with married couple John Krasinski and Emily Blunt, and another engaged pair, Jimmy Kimmel and Molly McNearney.
Jen has shown off her toned dod in several different bikinis each day, and we now know Theroux has some of the hardest abs in Hollywood.
When Jen gets back to L.A., she'll resume supervising renovations on her new home in the Bel Air area. The estate will reportedly be the site of her wedding to Justin sometime in 2013.
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