We live in a world where cheating on your partner has become the norm. There are just so many people who don’t value the relationships they are in, and are willing to throw away everything they have for the prospect of a meaninglessly exciting fling.

However, sometimes people suspect their friends of being cheaters more than they do their partners.

It must be all those TV dramas where the “lifelong best friend” starts creeping into bed with their best friend’s other half.

A woman called Kelsey suspected her best friend so much that she even sought the help of a popular YouTube channel to catch her out.

Kelsey, her boyfriend Sam, and her best friend Britney, appeared in a very dramatic episode on the YouTube channel, ‘To Catch a Cheater’.

However, while both Sam and Kelsey knew they were being filmed, Britney obviously did not.