Hollywood actress Jennifer Aniston has slammed rumours that she is pretending to date co-star Gerard Butler to promote their movie 'The Bounty Hunter'.

'They think that if you do a movie together and you get on really well you must be dating...I think it's a filler, it's fodder, it fills magazines, it has nothing backing it at all,' femalefirst.co.uk quoted her as saying.

'You know there's all this stuff about calculating...that me and Gerry are in this fake relationship for the press of our movie or the selling of it. It's just so insulting at the same time, but again it's the story...,' she added.

The pair sparked rumours of a new romance after Butler joined Aniston on vacation in Mexico last month to celebrate her 41st birthday.