08/26/2011 at 04:00 PM EDT
and her boyfriend Justin Theroux
have taken the plunge – the pair have officially moved in together, a source tells PEOPLE.
"They decided to rent a house together while they keep searching for the perfect [one] to buy," says the source. "Jen and Justin are very excited about living together in their new home."
As PEOPLE reported in July, the couple have been house-hunting
for a while, but decided to settle into a two-bedroom rental in the Hollywood Hills until they find a permanent haven.
Aniston, 42, moved out
of her Beverly Hills spread in July after deciding
the home was "too much" for her and it was time to "simplify." It sold for $38 million.
The actress rented the Hollywood Hills house on Aug. 1, a real estate source tells PEOPLE. The house provides the couple with privacy, hardwood floors, a new ozone pool, spa and viewing deck. The master suite features vaulted ceilings and French doors leading to the yard.
Since returning from a romantic Hawaiian getaway
, the couple has been enjoying time together with friends. On Aug. 24, Aniston and Theroux, 40, shared a long dinner with George Lopez at Chateau Marmont in West Hollywood, and a source tells PEOPLE the couple looked comfortable – and affectionate – together.
"She and Justin looked very happy together," says the source, "and even kissed at the table."