The Grease actor has previously been accused by the man of exposing himself during a Royal Caribbean cruise in 2009, but Zanzi is now requesting unspecified damages for the alleged assault, TMZ.com reports.

Travolta – who is married to Kelly Preston – allegedly asked for a meal to be delivered to his room, where he then asked Zanzi for a neck massage.

He then claims the actor dropped his robe when he went to reach for his neck and forcefully embraced him, telling him he was "beautiful".

When he resisted, Travolta reportedly offered him $12,000 to remain silent about the issue.

Zanzi claims he told management on board the cruise ship about the event but they refused to allow him to write out any details.

It is the second time in recent days the legendary star has been sued.

Robert Randolph, who wrote book You’ll Never Spa In This Town Again - which claims Travolta had gay relationships in a Los Angeles spa – has filed a lawsuit claiming Travolta and his lawyer Marty Singer had falsely claimed he had serious mental problems and had spent time in a psychiatric hospital, to try and make him out to be an unreliable source and prevent other media and booksellers writing about or carrying his tome.