Stop us if you've heard this before: Sources say Robert Pattinson and Kristen Stewart are moving in together.

Of course, some tabloids have stated these two already share a home and are willing to give tours to any magazine that comes calling.

However, there's less truth to that story than there was in Tiger Woods' wedding vows.

“They’re not ready for a huge commitment, but right now the best thing to do seems to find a home with a lot of privacy and security where they can find out how compatible they really are,” a friend told In Touch Weekly of Robsten's plans.

So far, this imaginary search has taken Kristen and Rob to residences in Beachwood Canyon and the Hollywood Hills.

Robert Pattinson seems excited, and Kristen Stewart nervous, about the possibility of cohabitation.

Adds the anonymous, totally real pal:

“Even if you are head over heels in love with each other, you never really know if one of you has habits that will drive the other crazy. They want to give it their best shot, and that’s a big deal.”

A very big deal. Our advice to Robert and Kristen: be open, be honest and don't keep any golf clubs around the house. Right, Tiger?