<human>: Can you provide a brief overview of the text?

[UPDATE](

I feel like I'm in a horror movie right now and I don't want to leave my house. I got a message on Twitter from a blank profile with no photo or posts. The message was a link to a Literotica account with about 30+ stories and a photo gallery, the message said "you should feel lucky knowing I want you so much". Just that line made me feel disgusted. I glanced threw the stories and the "main character" had my full name and were really fucked up. I don't want to go into detail but tags were amputation pet fetish, drowning in piss, dismemberment, necrophilia ect. 

I couldn't read the stories and I was already crying knowing someone wrote this. I couldn't hold back and looked at the photo gallery, and there were about a dozen photoshopped pics of me covered in blood, blue skin and lips, face cut onto a corpse. 

I kept telling myself it was a dumbfuck trying to freak me out and I wish it has been but the photos that were shopped were all from my Facebook and I only have 73 friends on it. My photos are locked, you can only see them if we're friends and all my friends are either family or extremely close pals. I haven't posted these photos on any other social media place and some were taken days ago. 

I'm really afraid to speak to anyone right now, I've ignored everyone today. I'm so freaked out at the though of someone I know, a close friend thinking about that type of thing. I don't know how to find out who it is and it's eating at me deep. Any ideas on how to find who's been posting these?
<bot>: Someone on Facebook who's a close friend or family wrote necro stories about me and shopped my face onto dead bodies then sent a link to me. I'm really creeped out and don't know who did it.