Am I the Asshole?

The original post: /r/amitheasshole by /u/RemarkablePhrase9115 on 2025-02-20 21:03:41.

I, Kyle, am 34 years old. My ex boyfriend/roommate, Aaron, 34, occasionally does mth. He does it as a booty bump. He knows I know that he does it, because I threw away 3 needleless syringes that he used. His behavior towards me has changed, he's meaner to me, gaslights me into believing he's not on it, when I can CLEARY TELL his IS on it, having lived with him and his family for 9 years, I know him. I know him drunk, stoned, or on other drugs. I miss my best friend/brother. I just want him to stop it. He told me if I stop my prescription of my Adderall, because I'm high functioning autistic, then he'll stop the mth. Which I dismissed and shot down because I am prescribed my meds, and that is only his addiction talking. Reddit, AITA for NOT saying anything? Please help. Any and all comments are accepted. Thanks in advance.