A source revealed: "They were full-on making out!"
However, Courtney's representative insists the kiss was nothing more than a
friendly embrace.
He said: "Courtney was just giving Bruce a quick hello and then they went
their separate ways."
After the smooch, Bruce spent the rest of the evening partying with his
friends.
Revellers at the club had gathered to see British singer Amy Winehouse
perform.
Last month, Bruce rubbished claims he was a client of Hollywood madam Jody
'Babydol' Gibson.
Gibson announced she was revealing the names of her famous clientele in
autobiography 'Secrets of a Hollywood SuperMadam'.
In the Willis chapter, Gibson claimed the 'Die Hard' star ordered "five hot,
young" prostitutes for a party.
His attorney Marty Singer furiously dismissed the claims.
He said: "The story is a complete fabrication. Bruce Willis doesn't know
this woman. He has never even spoken to her."