Jude and Sienna: Sometimes love just isn't enough

Amid the responsibilities of his career, the bubbly beauty provided a much needed dose of fun.

And Jude, who takes his role as a father very seriously and is fiercely protective of his children, appreciated the fact that his new girlfriend doted on his kids - despite her youth.

For her part, Sienna said simply: "I am their friend, I love them very much"