A woman has shared what she claims is an 'old but effective' hack to test how faithful your partner is - and it's incredibly simple to do.
Taking to TikTok, Aurie Louisse, who posts under @aurielouisse, shared the video with her followers and said all you need to do to set 'the trap' is use the mirror in the sun visor of your partner's car.
Then, leave the mirror half-open - that way, when you next come to it if it is fully open or fully closed, you'll know someone else has been using it.