It's one of the most intimate exchanges known to mankind - so intimate that even prostitutes refuse to do it.
But Hollywood stars are happy to lock lips for all to see, and actors and actresses even boast and joke about their screen kisses.
Some make a joke of their smooching, others reveal how awkward kissing a stranger can be, and some go to great lengths to make the experience as far removed as possible from the romantic moment it's supposed to be.
The screen kiss was once the stuff of Hollywood legend, with crew and cast sworn to secrecy about what really went on ? but nowadays the movie stars are happy to talk about their kissing time, and what they do to ease the tension of a stolen smooch.
Even movie veterans are coming forward with their memories of classic kissing scenes, which were closely guarded secrets back in the day - the stuff of taboo.
Take Tony Curtis, for instance, who has recently revealed what it was really like to kiss screen icon Marilyn Monroe in Some Like It Hot.





