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Kate Upton

Jemal Countess/Getty Images

Cheer up, high school seniors everywhere—Kate Upton is still on the market!

A rapidly spreading report that she was spotted canoodling with Sean "Diddy" Combs last month at LIV nightclub in Miami Beach is not true, according to both rumored halves of a hot 'n' heavy makeout sesh.

"Really??? Not at all true..'@TheCut: .@KateUpton and @IamDiddy seen sucking face and dining out!'" Upton tweeted today, quoting a less genteel version of events.

Diddy also tweeted: "Attention all Media. I don't even know Kate Upton personally! I'm not dating her ! What's being reported is not true. END of story!"

And, never one to miss a moment, he added, "ATTENTION MEDIA! YOU KNOW WHAT IS TRUE THOUGH? @CassieSuper NEW MIXTAPE #ROCKABYEBABY COMES OUT TOMORROW ON http://DATPIFF.COM  BANG BANG."

Upton, 20, was previously linked to Detroit Tigers pitcher Justin Verlander, but she doused those flames when she pointedly told Fox News in February that she was single.