Who is Benji Madden and how on earth did he manage to marry Cameron Diaz?

In her two decades as a star, Cameron Diaz has racked up a roster of A-list boyfriends (Justin Timberlake, Jared Leto, Alex Rodriguez, Matt Dillon) almost as impressive as her movie career. But now, finally, she has settled down with. . . Benji Madden? Remind us who he is again? Oh, that’s not quite fair. […]