On a previous trip to Winston's, Hollywood's hippest new nightspot, Ryan arrived with a woman on each arm - and still couldn't keep his eyes off the other gorgeous girls in the club. "He hit on every good-looking woman," says an onlooker.

"He came over to my table and began hitting on me and my girlfriends," one of the women revealed. "He was so desperate to hook up ... he actually used the oldest line in the book, 'Don't I know you?'"

When the woman told him they'd never met, he replied, "Maybe you're too young to know me."

She adds, "He was really Mr Ego."

On yet another visit to Winston's, sources say Ryan made a beeline for a curvy brunette, who then started to dance suggestively with him. But when another girl danced seductively in front of Ryan, he ditched the first girl in favour of the second.

Later, Ryan downed beers at Hollywood restaurant Dan Tana's, where onlookers say he was "acting like a frat guy on spring break".