Jennifer Aniston has a new boyfriend!  There's word Jen has been getting cozy with Actor and Screenwriter Justin Theroux.  Who's he?  That's exactly what I was wondering so I rounded up a few pictures for us to see! reports  Theroux's work includes a recent part on the sitcom "Parks And Recreation."  Theroux was also a writer on the screenplay for "Rock of Ages," which comes out in theaters next year.  The two apparently met on the set of "Wanderlust" last fall in Georgia.  Jen through a party a a few days ago to introduce her new man to friends Courteney Cox and Chelsea Handler.