Is AUTHOR wrong in the post ? POST : Obligatory TL;DR at the bottom. 
 So a couple of months ago, i enrolled into a new school (I’m in 8th grade and socially inept, therefore i only made a few acquaintances), and i became friends with a boy my age-who, for the purposes of this post, I’ll call D. So D and i became good friends really quickly. Really quickly.
 He manipulated the teachers to change the seating order so that we sat together in every class, something I didn’t consent to  or even know about. He would follow me around, not giving me any space and often stopping me from talking to the other classmates (we sit in the very back, with no other desks on either side of us. He is very rich and constantly talks about it with everyone, so he has a bad reputation as “the weird rich kid” (he has long hair, doesn’t talk much, sings, etc.). So i wanted to find out who he really was. Bad mistake on my part.
 D began by telling me that he had had a dream where i died, and when he woke up, he cried for half an hour (i was really freaked out but played it cool). D began to tell me other things. Beginning with casual mentions of his mother hurting him, emotionally and physically, i soon learned that she was part of a pyramid scheme called Purtier Placenta (look it up, it’s disgusting). Apparently his dad was also absent for the first 9 years of his life, and his brother (18 years senior to him) was also quite the tyrant.
 D causally sprung factoids and tidbits about abuse during normal conversation, and it was beginning to get disturbing. I have terrible anxiety, I’m awful socially, and i have deep depression from some past traumas that I don’t want to get into right now, so it was very hard for me to have to deal with my issues as well as his emotional baggage. I like him, but it has been exhausting and even more depressing to be around him recently, and I don’t want to relapse into a deeper state of depression. AITA for not wanting to be friends with him anymore?

TL;DR:
My abused schoolfriend got very pushy in our friendship and began to tell me (a severely depressed and anxious child) all of his emotional baggage and pain. This has left me tired as he is not giving me any space. AITA?