Anna Pocaro / LEP / Splash News 1 / 9
Anna Pocaro / LEP / Splash News 1 / 9

Well, this is weird! "Grease: Live" was just live and so, too, is Olivia Newton-John's ex-boyfriend, apparently.

An Australian tabloid claims it has "proof at last" that the legendary singer's ex-boyfriend Patrick McDermott is alive and has been secretly living in Mexico under an alternative name since his mysterious disappearance nearly 11 years ago.

Australia's Woman's Day alleges in it's new cover story that it knows where Patrick is.

An investigator told the mag: "It's rumored he was with a German national. I spoke to people there [in Mexico]. The girl he was traveling with was described as having a German accent. ... To come up with the conclusion that he fell off the boat, and allegedly no one saw him fall off the boat, is the most preposterous thing I've ever heard in my life."

Patrick and the "Grease" star had been dating for nine years when, in June 2005, he vanished during an overnight fishing trip near San Pedro, California. No one saw him go overboard, although 22 people were on the boat.

Olivia reported that he was missing a week after the fishing excursion when he didn't show up for a family event.

His body was never found. In 2008, the Coast Guard said Patrick, a cameraman, had "likely drowned."

Mystery and suspicion has shrouded the incident since the get go. At the time of his disappearance, Patrick owed $8,000 in child support to his ex-wife, Yvette Nipar, for the care of their son, Chance, among other debts. Also, his life insurance policy would reportedly leave $100,000 for Chance after his supposed death.

Many have wondered if Patrick was actually alive and faked his death. Five years after Patrick disappeared, Dateline NBC reportedly hired a group of investigators who claim to have found Patrick under his birth name of "Patrick Kim" living near Puerta Vallarta, Mexico.

In a press conference, the lead investigator, Philip Klein, told reporters: "Mr. McDermott's wishes, according to his counsel, is not to be 'hounded' any longer by investigators or the media."