G Jessica Alba at MTV TRL 2005Jessica AlbaBruce Willis may have a reputation as a hard man but when it comes to love scenes he's a wimp according to his latest co-star.

Jessica Alba, who'll be seen with Bruce this summer in Sin City, revealed Bruce tried to get out of smooching her in the comic book flick.

Sexy Jessica, a regular on sexiest women lists, bragged to the TeenHollywood website:

"It was easy for me. I've done a few kisses in my day.

"We had this big romantic kiss, and it was supposed to be like this big, epic, beautiful kiss, like you're anticipating this thing."

But Bruce - who is famed for his tough roles in action flicks like Die Hard - wasn't quite so keen on the idea.

Bruce WillisBruce Willis"We finally get to that scene and Bruce is sitting down and I'm going in for the kiss and he goes, 'Maybe I get up and walk away and she runs after me.'"

Bruce eventually decided to pucker up, much to Jessica's delight.

She described the kiss as "very romantic, passionate and beautiful".

Well worth the wait then, eh Jess?