Kinda. I believe this guy from my school had major issues anyway.
I always knew there was something odd about him, and then one day I was studying in the library and he was in the computer in the far corner and he was looking at real videos of people getting tortured.

He used to get on my bus home and I used to dread him sitting next to me, because he just used to waffle on about violent video games. The turning point was one day he got off at my stop (he usually got off before me) and when I asked where he was going he said "I want to see where you live"

I literally shouted at him and told him to back off, he left me alone after that. Not so long ago I was on my lunch break in work and went into a Starbucks and he was in there!! He legitimately said hello and stood in front of me to stop me leaving, I literally blanked him and pushed past him. He was such a creep.