BETRAYAL.

It's breaking a person's trust and confidence.
You can trust someone with all your heart only to betray you later.

Betrayal is something no one wishes for at all. You cannot tell anyone not to betray you. Well, you can tell them but when they do betray you, you can do nothing.
Maybe taking some revenge which is a way of getting even with the other person.

Having a traitor in your business is the worst. That person will let your secrets out to the competitors.
Before you realise what's happening, worse has been done in a short period of time.

Your business will fall a few steps behind and will take a lot of hard work to put it right where it was.

In matters of love, I think it's the worst of all. When you've loved someone with all your heart but then again, the person doesn't feel the same about you. Or even worse, cheats on you.
I'd never want to go through such a thing which surely must be heartbreaking.

It's better If someone tries to detect if anything is wrong and solve it early. If you notice any signs of someone trying to betray you, just fire them, if it's in a business.
Do not wait until everything is out of control and the person has already done much damage to your business.
Betrayal is painful and when it happens, you feel that you can kill the traitor. Some threaten the traitor and even kill them.

It's good if we are to be trusted by the people we work with, partners and our friends. Any sign of mistrust, will account for betrayal in the future.
Being called a traitor isn't good.