Co-Stars Jennifer Aniston and Justin Theroux in Relationship?

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After showing up at an after party for the MTV movie awards, there is no denying there is something going on with Jennifer Aniston and Justin Theroux.

There has been speculation that Aniston and Theroux, who co-star in the movie Wanderlust, were romantically involved. Showing up together to the party last night only ignited the rumors or confirmed them?

Aniston and Theroux remained at each other’s side all night while mingling with other A-list couples such as Cameron Diaz and Alex Rodriguez and Kristen Stewart and Robert Pattinson, according to Gossip Cop.

The pair were openly affectionate throughout the night, and left the party together.

What do you think about Aniston’s new man?  Is this a full fledged romance??