01/04/2012 06:25 pm ET Updated Dec 06, 2017

John McCain YouTube Account Ditched 2008 Attack On Mitt Romney (VIDEO)

Mitt Romney got a boost from Sen. John McCain (R-Ariz.) on Wednesday afternoon, when the Arizona Republican joined Romney on stage in New Hampshire and endorsed the former governor of Massachusetts in his bid for the White House.

"I am really here for one reason, and one reason only," the 75-year-old senator told the crowd, according to a video from The Washington Post. "And that is to make sure that we make Mitt Romney the next president of the United States of America."

But McCain hasn't always rooted for Romney. The two were bitter rivals in the fight for the 2008 Republican presidential nomination, which McCain, of course, ultimately won.

Four years ago, then-candidate McCain released an attack ad titled "A Tale of Two Mitts," a mashup of clips that portrayed Romney as a flip-flopper on the issues of abortion, gun rights and even his own political identity. The ad was approved by John McCain and funded by his campaign.

According to Politico, Romney in the past has called McCain a "creature of Washington" and has said his views are "out of the mainstream, at least in my view, of conservative Republican thought."

McCain and Romney may be eager for us to erase their past rivalry from our memories. BuzzFeed reports that the McCain camp has removed the video from the senator's YouTube account.

Indeed, the video, available below, is nowhere to be found on McCain's robust 450+ video YouTube channel, and when a user tries to watch the clip on a Washington Post article from 2008, the video doesn't work and a notice appears indicating that it "has been removed by the user."

According to YouTomb, a research project from MIT that "investigate[s] what kind of videos are subject to takedown notices due to allegations of copyright infringement," "A Tale of Two Mitts" was removed on December 25, 2009.

Perhaps McCain and Romney have been planning for this day for over two years.

WATCH: A Tale Of Two Mitts: