Brunette tests partner's loyalty with another girl – it goes HORRIBLY wrong

THIS is the moment a suspicious girlfriend tested her lover's loyalty with catastrophic results.

In the clip, we see a woman who does not trust her boyfriend and believes he is eyeing up other girls.

As a result, she requests the help of YouTube’s To Catch a Cheater.

With the help of an actress, she selects a decoy to catch her boyfriend cheating.

But she could never have expected it to go quite the way it did.

Skinny girl tests boyfriend's loyalty SG/TO CATCH A CHEATER

BAD CHOICE: The bloke ended up cheating on his girlfriend

Steve is the subject of the experiment and is seen enjoying a coffee before the hired actress introduces herself.

He immediately asks what type of meat she likes in her pasta and she fires back with “sausage".

He then proceeds to compliment her before agreeing to go back to hers to “hang out, smoke and have fun".

Watching on, Steve’s girlfriend is clearly distraught.

Watching on, Steve’s girlfriend is clearly distraught.

The actress pulls the final straw and asks Steve if he would like to see her again.

“I would love that,” he responds before taking her number down.

“Maybe we can have some phone sex, without the phone?” she asks.

She then quizzes him on his relationship status, before he announces that he does not have a girlfriend.

The two kiss while you see Steve’s girlfriend break down before admitting “he aimed pretty damn low".

She calls the bloke to confront him and they confirm their relationship is over.

This is not the first stunt of this kind, though.

Last week a bloke tested the loyalty of his his stunning teacher girlfriend on camera, before instantly regretting it.