"Natalie Portman and Michael Fassbender share an intimate moment while filming a scene for the Untitled Terrence Malick Project earlier this week in Austin, Tex.
The two shared a kiss in character on set and were spotted holding hands during filming."
(SOURCE. http://www.justjared.com/2012/10/17/natalie-portman-michael-fassbender-kiss-for-untitled-malick-project/)