Scottish actor Gerard Butler, who is looking for lasting love these days, says he is determined not to fall in love with movie co-stars after his previous on-set dalliances ended in "disaster."

Butler, 42, who has been linked to a string of Hollywood beauties including his The Bounty Hunter co-star Jennifer Aniston and Cameron Diaz, admits it is too easy to become infatuated with an actor while at work, Contactmusic reported.

"That's a dangerous path. When you're making a film with someone, you get to know them very well indeed and it's too easy to develop a sort of obsession with them that you think at the time might be love. But it isn't. Earlier in my career, I had a couple of relationships with co-stars and both times it was a disaster," he said.