Jessica Alba has revealed there is often more than just acting going on when it comes to the love scenes being filmed on movie and television sets across the globe.

The gorgeous actress has discovered a disturbing number of people get tangled up in short-term whirlwind romances, cheating on loving partners back home, for as long as the filming lasts on location.

But despite herself being one of Hollywood’s sexiest stars, the pregnant actress insists her fiancé Cash Warren has nothing to worry about – as far as her remaining faithful is concerned.

Alba reveals: “There is a lot of infidelity. Do I like to see it? No. Would I ever be involved? Never. I would also not put up with it myself, because I don’t have to. I am 100% faithful and I expect it to be returned.”

The pregnant actress does concede that a life as an actress can put a lot of unhealthy pressure on relationships in general.

“Film-acting means having to reinvent yourself every few months, and going to live in a new place on a film set and deal with different situations and people. It takes a toll on your personal life. You can be constantly living your life on movie sets, which is not healthy.”