I kissed The Wrong Guy

Do you ever made and experienced a big mistake that effect your whole life?? That when it comes to your mind you will always feel remorse that you should not have done it by forcing yourself to believe that it was just a dream and it is not true, it is not happens. But what if this big mistake you should not regret ?? That's what happened to Lei when she mistook a guy and still regretting for many years. It was the thing that comes back and forth in her mind and keep ringing in her ears to think of "I kissed the wrong guy"