I told my friends boyfriend she cheated on him and they are now both missing

It’s been like 6 weeks. I feel immeasurable guilt. I don’t know what happened after I told him. I knew she had been cheating on him for a few days. I told her that she had until the next week to tell him or I would. She said she would end it and begged me not to tell him.

A week came and went and nothing happened. So I did it. And now no one’s seen them in over a month. I’ve spoken to police many times about it. They have drawn the same conclusion you all have also drawn. I don’t know more beyond that.