is herobrine real?

I remember being 11-12 thinking he was real. Back in 2011. I made my full diamond block house in creative single player and made a little bed for herobrine and had a chest in it with some diamonds and stuff. My game crashed and my 11 year old self came back and apart of the world got deleted so the content's of just "herobrine's" chest was deleted.

I flipped my shit and never went back to that world.