Don't You Love Me?

Emilia was only 16 when she was cheated on. Here's the story.
I was Emilia's closest friend, we had been friends since we were 4 years old. I don't know what happened to her. She gave a little card to her crush, Gregory. He read it and smiled. He said these words. "I love you with all of my heart, Emilia." It... was a lie. They dated for 5 months, then Emilia caught her "boyfriend" kissing her sister, Melissa. She ran to her house and stabbed out her eyes, she died from blood loss. She came back as a vengeful spirit and went to her boyfriend and screeched "Why would you cheat, you said you loved me with all of your heart! Why did you cheat?!?" As she said these words, she stabbed him in the heart. She now finds cheating men, gives them a card asking why would he cheat and after reading, they'd be stabbed in the heart,