Keira Knightley and her actor boyfriend Rupert Friend are buying a $4 million love nest together.

The 'Atonement' beauty hopes committing to buying a house will help cement their relationship, after their busy schedules have kept them apart recently.

Keira is also said to be worried about Rupert's budding friendship with his 'Buddha's Little Finger' co-star Sophia Myles.

A friend said: "They have been arguing about Rupert's workload and how little time they spend together. Keira was quite concerned they were drifting apart and was also worried he was getting a bit too close to Sophia."

"So she flew to the set in Germany and they sorted things out. It was then that they decided to buy a house together and they are going to put in Ł1 million each (approximately $2 million)."

The couple - who met on the set of 'Pride and Prejudice' in 2004 - have reportedly decided to start looking in London's popular Notting Hill area.

Keira, who is currently living with her brother in Hyde Park, is so determined to make the relationship work she has put her film career on hold.

The pal added to Britain's Mail on Sunday newspaper: "Keira has turned down all scripts for the time being so she can spend more time with Rupert."

"The problem is he has been doing back-to-back projects for six months."

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