Megosztott hang

What if everyone around you is slowly losing their memory? I started noticing something small at first. My coworker didn't remember a project we worked on together for months. My mom forgot she had told me a story before. My best friend didn't remember a conversation we had just last week. I thought it was nothing. Everyone forgets things. But then it got worse. My partner didn't remember our anniversary. Not because he didn't care. He genuinely didn't know we had one. I showed him photo