Jennifer Aniston car shots Lexus white sunglasses driving
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X17online broke the news of Jennifer Aniston and Justin Theroux's romantic dinner date last week and now we can report, exclusively, the two are still going strong, having spent the entire weekend together!

On Friday the Wanderlust costars popped in to Universal Studios (in separate cars) where the Friends star worked on some post-production (top photo). Later, Theroux went to visit his new ladylove at her home, for some one-on-one time.

On Saturday Jen treated herself to a spa day at a Beverly Hills hotel, and two hours later, her new man showed up Brad Pitt-style on his sexy motorcycle. The pair then had a leisurely lunch at the hotel and left together in the same car, chauffeured by Jen's assistant.

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Our photographer tells X17online:

    "These two are jumping into this head-first. They're together all the time. But they sneak around and do everything they can not to be photographed together. Jen doesn't like her relationships to go public before she's ready."

To round out weekend, Aniston had a showing of her $42-million pad on Sunday so she took that opportunity to rendezvous with Justin again, at the same hotel. The pair's meetings certainly seem to life Jen's spirits, our snapper tells us: "When Jen headed home Friday, she was blasting music in her car with the window down and she seemed really happy. Justin definitely put a smile on her face!"