"I've known Leo for a long time now and we're very close... when I go over there, that's where I stay, same as if you and me had been friends for 10 years and you were coming up here, you'd give me a bell and say, 'Can I stay at yours?' 'Yeah! Not a problem!" Leonardo DiCaprio is always willing to let his friends stay at his home in America, according to his Gangs of New York co-star Stephen Graham.