I heard of a couple where the guy just disappeared one day. No calls, no texts, no explanation. The girl was left in a state of shock and confusion. She kept thinking something bad had happened to him at first. But then she found out he had just moved away with a new girl he had met online. It was so cruel, like he just erased her from his life without any regard for her feelings.
There was a case where during a breakup, the girl's ex - boyfriend spread false rumors about her all over their social circle. He said she was the one who had been unfaithful when it was actually him. It was a horror for her as she had to face the judgment and stares of people she thought were her friends. She felt so alone and betrayed, and it took her a long time to regain her confidence and reputation.