Hotel fun

Hello,
We are a couple m27 f29 I fucked her on the balcony 6 years ago. but before doing this, I asked my wife to dance with the curtains open. The man on the next balcony was watching him. But my wife told me about this incident much later. She danced very beautifully that day. She told me that she made eye contact with the man next to her. I still can't forget that day. What do you recommend me to do?