It's stupid not to communicate with the person you care about. It doesn't matter what happened. He may be gone at any moment. Can you imagine? Forever. And you won't get anything back.

I work as a realtor in the field of luxury real estate

You're absolutely right. Life is unpredictable, and it's important to cherish the people we care about. Communication is key to maintaining relationships, even during difficult times. Don't let pride or misunderstandings get in the way of expressing your feelings.