Jack Nicholson's passionate kisses helped re-awaken his "Something's Gotta Give" co-star Diane Keaton's sexual appetite.
The script for the 2003 romantic comedy called for the movie veterans to pucker up, but the actress struggled with the scene because she kept forgetting her lines after locking lips with aged Lothario Nicholson.
And she admits the onscreen passion made her feel alive again years after her split from Al Pacino.
In an excerpt from her new book "Then Again," she recalls, "For me, Diane, not (her character) Erica, the kiss was a reigniting reminder of something lost suddenly found.
"I don't know what Jack felt. I just know everything that came out of his mouth gave me the rush of a first-time love, over and over again. It wasn't down to the script. It was Jack."