The 'Bodies' singer and girlfriend Ayda Field – who he has been dating since January 2007 - moved back to his native UK earlier this year but have now headed back to Los Angeles to support the actress' mom Gwen after she ran the risk of losing her home.

A friend of Ayda's told Britain's The Sun newspaper: "Debtors are literally on Gwen's doorstep. Her house has been threatened with foreclosure.

"She doesn't work and has relied on money from her divorce and from family to fund her lifestyle. But things have been getting tricky recently and she's worried about the future.

"As a result, Ayda is concerned about her mum and is feeling stressed. It's a big part of why they have moved back to America. Ayda feels she needs to be there to help her mom and she's hoping Robbie will just pay off all her debts.

"Robbie has already been extremely generous. He and Ayda have offered for her to move in but that is not going to work as a permanent solution."

Robbie – who recently said he was returning to Los Angeles because he missed the weather – gets on well with Gwen after they bonded over their love of gambling.

It was recently revealed Robbie had invited his future mother-in-law to move in with him.

A source said recently: "Robbie has really hit it off with Gwen. One of his hobbies is playing poker with a small group of pals. Gwen has joined in a few times, and on a couple of occasions, Robbie and Gwen have carried on playing until the small hours after everyone else went to bed."