People reveal the worst things their best friends have ever done to them

It can be difficult to know who to trust wholeheartedly, as proven by these confessions from people who've had to end friendships.

People from around the world took to the secrets sharing app Whisper, to reveal the worst ways a friend has disappointed them - and it will make you think twice about who you keep close.

Many people revealed their former friends had affairs with their significant other and in some circumstances even worked tirelessly to break up their relationship in order to steal their spouse. 

One man said his ex-wife is now married to his therapist friend and they have two children together, after growing close when he treated her for anxiety.