A friend says, "This is the first bloke Sienna has been serious with since she finally split from Jude. These vicious allegations of her being with Sean 'Diddy' Combs and splitting up his relationship with Kim Porter are awful. But they have actually worked in her and Matthew's favor a bit. It has taken the heat off their relationship."
Miller split from model Jamie Burke after a brief romance earlier this year.
COPYRIGHT 2007 WORLD ENTERTAINMENT NEWS NETWORK LTD. All Global Rights Reserved.