This woman thought a stranger was flirting with her, but he was actually saving her life.

Christine Burnie was in an Aukland, New Zealand hardware store when a man approached her.

"Excuse me love, you know you have a black mole on your back you should really be concerned about," the man said.

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Burnie thought it was a clever pick-up line, but the man was serious — and so was the mole.

A doctor determined it was an invasive malignant melanoma and removed it.

She told the New Zealand Herald she's "excited to be alive," but that she never got the name of the man who warned her about the mole. She's gone on social media trying to track him down to thank him in person.

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"Whoever you are that approached me — I am a mum with a young teenage boy. THANK YOU for saving my life," she posted to the Neighborly network. "I am truly appreciative of your advice. THANK YOU THANK YOU SIR whoever you are."

Her tests since the surgery show she's free of the cancer.

Photo by PDPics, CC

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