Kirsten Dunst and Razorlight’s Johnny Borrell are reportedly planning to buy a £5million London townhouse - after a wall in Johnny’s old home collapsed.

The couple had already been planning to move in together but the wall collapsing at Johnny’s Camden home was “the final straw”, a source told the Mirror.

The source explained: “As well as the physical damage and the place looking like a bombsite, guitars and some of his record collection was damaged. He wasn’t a happy man, to say the least.”

“But he has been thinking about moving in with Kirsten for some time and is looking forward to them setting up home together.”

The couple are said to have their eye on a property nearby and Kirsten is a firm fan of life in London.

The Super-Man star returned to Los Angeles on Friday after more two months in the British capital working on new film How to Lose Friends and Alienate People with Simon Pegg - and enjoying the social life.

Kirsten is frequently spotted out at celebrity haunts around the city and How to Lose Friends..’s producer Toby Young told People magazine recently: “I think she has really fallen in love with London.”

Kirsten and Johnny began dating in April after meeting at a gig in Los Angeles. They made their first public appearance together at the South by Southwest Music Festival in Texas later that month.