What do you think about me going to tell HR about a potential hire having a history of embezzling?
Do you have evidence he embezzled? If not, why would you do something so mean and destructive?
Just because I want to hurt his heart for being a bad friend
Sometimes I also wish that bad things would happen to people that I do not like, but acting on that wish or actively harming people is never the right thing to do. If they had been a bad friend, they owe you an apology and they should make it up to you, but if you take revenge, specially for something that would ruin their life, then that's on you and that may also be illegal.
Maybe I should reconsider.
I hope you do. Carrying around vengeful feelings is bad for you and those around you. Revenge doesn't solve any problems, it just brings more misery into the world -- is that what you really want?