Being a heartthrob must be tough!

While on a recent vacation, John Stamos, 52, was hilariously mistaken for fellow actor Rob Lowe by a fan — and John caught the whole encounter on tape!

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#AwkwardVacationMoments. @robloweofficial

A post shared by John Stamos (@johnstamos) on

"#AwkwardVacationMoments," the Fuller House star captioned the funny Instagram clip of a confused woman innocently claiming John is Brothers & Sisters star Rob.

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Now that we think about it, the two actors really do look alike! They're both handsome, have blue eyes and, most importantly, great hair! Innocent mistake, lady.

Click through the gallery below to see more celebrity lookalikes!