Jennifer Aniston and Justin Theroux Buy a House Together!

Things are definitely getting serious in the romance between Jennifer Aniston and Justin Theroux.

After news broke that the actress had purchased a house in Bel Air, Calif., many wondered how Justin would fit into her new home. 

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"The house will pull them together in a way that hasn't existed up to now. It's their house. Justin put up a portion of the money so that it is truly both of of theirs, both of their names are on the deed and title. They couldn't be going stronger," a source tells OK!. "They'll create a nest together, combining both of their tastes. I can't wait to see what they come up with as a couple."

The mansion is not only 8,500 square feet, but also has a vineyard — plenty of room to grow in. "Jen is so happy to be done looking," reveals the source.

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And will the couple, who have been dating since May, finally make it official now that they own a house together?

"I was somewhat shocked that they didn't get married on New Year's, but she's so in love, happier than she's ever been in her life with Justin. I've never seen her so at peace and so relaxed. The struggle is over," says the source. "The self doubt is over. Jennifer is over the moon in love with a guy who is on that same moon with her. Maybe a marriage certificate means nothing to her right now. She's got a lot of old fashioned beliefs and she will marry Justin. He's proposed; they've got the rings. It's a done deal except for it's not official."