DEAR HARRIETTE: My neighbor is engaged to be married to a guy I have come to know over the past year. He has always seemed nice. You can imagine how upset I was when I saw him the other night at a lounge with another woman. He wasn't just with her either. He was hugged up in a corner with her, and they were kissing. I am 100 percent sure that it was the same guy. Meanwhile, the wedding date was just set for him and my neighbor. I don't know what to do. I feel like I would want to know. Should I tell my neighbor what I saw? -- Before My Very Eyes, Brooklyn, New York
DEAR BEFORE MY VERY EYES: This is a tricky situation. Often, people do not want to know about their partner's infidelity, and frequently they do not believe it when someone tells them. You must follow your heart. Following the Golden Rule, if you wish that someone would let you know if your fiance were involved with someone else, approach this situation in the same way. Tell your neighbor that you want to share some disturbing information with her. Then reveal the details of what you witnessed. Answer whatever questions your neighbor may have, and then walk away. Do not get caught up in the aftermath of her learning this information. She will have to decide her next steps. Whatever they are, that is her business. Do not judge her if she stays with him. She has to live her own life.