Theroux 'is Aniston's first love since Pitt'

Justin Theroux is the first man Jennifer Aniston has loved since Brad Pitt.

The 'Horrible Bosses' actress – who split from her Hollywood hunk husband in 2005 –told pals she has fallen head over heels with the actor since they started dating earlier this year and none of her relationships in the past six years have come close.

A source said: "Jen hasn't felt this way about anyone since Brad. They are moving quickly, but they know the feelings they have about [each other] are different from past romances."

Jennifer, 42 recently sold her Beverly Hills mansion and she and 39-year-old Justin have reportedly begun looking at a number of homes to replace it.

Late last month, the couple - who are currently enjoying a romantic vacation in Hawaii –were viewing up to six a day, including Ellen DeGeneres and Portia De Rossi's house and friends say they have even discussed marriage and children.

The source added to Us Weekly magazine: "They have talked at length about getting married and starting a family. She is anxious for the next phase of her life and feels like this is the time."