earsdropping - Listening to other people's secrets like you're the main cha

Listening to other people's secrets like you're the main character and they're just extras.

I heard my mom and dad talk about my report card. I had to pretend I wasn't listening.

I was in the living room and heard my brother say I was messy. I got mad.

I listened to my friends talk about me behind my back. It was like being in a soap opera.