Pattinson seeks Stewart commitment

Robert Pattinson will only take Kristen Stewart back if she marries him.

The 26-year-old actor – who was left devastated when his 'Twilight' co-star publically admitted this summer that she had cheated on him with her 'Snow White and the Huntsman' director Rupert Sanders – is said to be "desperate" to get back with the brunette beauty, but he wants her to "truly commit" to him.