Jennifer Aniston and actor-screenwriter Justin Theroux are living together after a brief courtship, sources told UsMagazine.com.
"And she's introducing him as her boyfriend."
Aniston is divorced from film star Brad Pitt.
She subsequently dated singer John Mayer, but they broke up in 2008.
Heidi Bivens, Theroux's girlfriend of 14 years, moved out of their apartment last weekend.