Bradley Cooper's girlfriend won't move to America for him.

The American Hustle actor is keen for Suki Waterhouse to join him in California because their busy schedules mean they don't get to spend much time together but the British beauty loves London too much to change her lifestyle and wants to continue splitting her time between the city and Los Angeles.

"Suki is a real Londoner. She loves the style, the nightlife, her family nearby and all of her childhood friends. LA is a very different beast - it's all juices and going to bed early for yoga at dawn," a source said.

It was previously claimed the couple - who have been dating for a year - are so serious about one another, they have discussed starting a family. "Bradley and Suki have been talking about having kids next year. They've been inseparable and Suki told friends having kids is something she's thinking about. And Bradley has made no secret of wanting to be a dad," a source said recently.

The 39-year-old actor has previously spoken of his desire to be a parent and wants to have the same kind of relationship his father, the late Charles J. Cooper, with his own children. "Of course I have [thought about being a dad]. I really hope I have that experience in my life. I saw how much joy fatherhood gave my own dad. So I hope it's part of my journey. You go through stages in your life, and fatherhood seems like a natural stage," he previously said.