It's a tale as old as time; in a moment of weakness, someone decides to test their partner's fidelity.
Then, to no one's surprise, apart from the person who set up the test, it results in humiliation and misery for all concerned.
This is what happened to one woman who tried to catch her boyfriend out.
But this woeful little tale differs from the usual narrative, with the woman having different motivations from the normal "I don't trust him etc etc etc" line.
Enlisting the help of YouTube channel To Catch a Cheater, which does exactly what it says on the tin, the set-up went as follows.
The woman's broadband engineer boyfriend is sent out on a job to help install someone's internet.
Needless to say, there are cameras installed in the house and the residents, twins, no less are actors.
Laying on the temptation thick, the oblivious man is approached by one of the twins, who attempts to seduce him with the classic, "Have you modelled before? I'm sure you have. You're, like, super-hot."
He laughs and thanks her, but doesn't take the bait.
The same twin then tries to coax him into helping her pick between two sets of lingerie. Subtle it is not.
Ramping up the seduction attempt, which has so far not gone well, the second twin gets involved.
He's asked "what if you could have both?" and, again, he politely declines, saying, "I don't think I should be getting that involved."
Basically, he loves his girlfriend and he tells the would-be temptresses so. Also remember that his girlfriend is watching this. So is she satisfied?
No, instead she's plagued with feelings of guilt.
Not only has she been cheating on him with a colleague, but she has no intention of breaking things off and had hoped to catch her boyfriend cheating to make it easier for her to end things.