Kristen Stewart gushes about Robert Pattinson

London: Kristen Stewart has talked about a few lighter moments she shared with co-star Robert Pattinson in behind the scenes clip from ‘Eclipse’.

The ‘Twilight’ star said she and real life boyfriend Pattinson often giggle while filming the serious scenes.

“We have established dynamics that nobody can mess with - and that’s what you hope to get to by the end of one movie,” the Sun quoted her as saying.

In the third movie of the ‘Twilight’ saga, Bella is forced to choose between vampire Edward and werewolf Jacob, played by Taylor Lautner.