Every woman has her best friend, that one best friend you’d do just about anything for.After all, sometimes it’s nice to know that someone has got your back.But one best friend has taken it to another level, writing an abusive letter to her best friend’s ex-husband. The letter, which is now doing the rounds on social media, was published on Scary Mommy.Going off what the best friend has written in the letter, it would appear the ex-husband had cheated on his wife. “This divorce is your fault,” she writes.“You hurt my friend, you lied to my friend, and you betrayed my friend. She’s handling this like the strong, resilient, compassionate badass that she is, and the two of you are managing to cohabitate in relative peace until you are able to help your kids through this transition and life change.” The letter starts out polite, but it soon becomes full of swear words and the best friend makes it clear, she doesn’t wish her friend’s ex-husband well.“Oh, I’m pissed. I’m pissed, and I’m looking at you, sir. You see, this is happening and it has to happen and it should happen, but you are the reason this is taking place,” she writes.