Woman finds out boyfriend cheated after she broke out in hives

A woman who discovered her boyfriend had cheated explains the telltale sign that proved he'd been with someone else.

Gab Gleeson, who shares videos on TikTok @gabgleeson_ explains she is allergic to Olaplex, which is found in some hair products.

She shares a photo of her arm and hand covered in a rash along with the caption: "Found out my boyfriend was cheating on me because I'm allergic to olaplex and as soon as he came over I broke out in hives."

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Her video has been viewed an extraordinary 6.1 million times since she first posted it.

She also captions her video: "Lmfao (Laughing My Freaking A-- Off) w*f (what the f--k) is wrong with him".

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"I think the real tragedy is that you're allergic to Olaplex, I'm sorry babe," writes one of her TikTok followers.

Others attempt to defend her boyfriend, suggesting he may be using the hair products in question.

To which she responds: "No man's i know is using Olapex y'all wake up."

"Olaplex: expensive hair treatment & mostly used by women with dyed hair," another adds.

"If he was using it she would have been broke out. It's not like she smelled it for the first time she's having a allergic reaction," adds another.

However her boyfriend's defenders persist.

"Maybe you're allergic to an ingredient in Olaplex that is also in a product he just started using," one writes.

"That's one hell of a way to find out," adds another.

"The way I would be LIVID," comments another.

"They have been dating for awhile if he used Olapex regularly don't you think she would know," one TikTok follower says.

"Boys think we will never find out if we don't look at their phone. *our bodies letting us know*," another writes.