Long post, but:
I had 3 roommates my freshman year of college. Me, Emily, Hannah, and Danielle (names changed here). Danielle and I automatically clicked and it was great, and I got along really well with Hannah, but there was quickly tension between Emily and I. Emily was super neat & clean; Im a bit of a clutter bug. Regardless, I respected the fact that we had shared space, and I kept such spaces clean.
Except every now and then there would be trash left out, or dirty dishes. Small things at first that then became larger and more frequent. Emily blamed me, since I was the "messy" one. She would flat-out yell at me about it. I wasn't the one doing it, but I didn't know who was. I was really struggling with my anxiety disorder at the time and I would literally sit in my room and cry because I didn't know what to do. The living situation became so toxic and full of anger. Danielle would always comfort me and talk about how much of a "bitch" Emily was. I was very shy and never had many friends, so I clung to Danielle as my one confident and support system.
Things escalated all year. One day Emily's entire bottle of expensive shampoo was emptied out in the shower. Another day, someone had deliberately swept handfuls of crumbs underneath her door. It was fucking ridiculous. She and I ended up having a screaming match at each other during finals week, before we all moved out for the summer. Neither of us could come to terms with one another.
ANYWAY. It was like July and I was texting Danielle and she tells me she has something really funny to tell me. And she tells me that IT WAS HER THE WHOLE TIME. She told me she hated Emily, and she wanted to "play a prank" on her, so she was the one causing all the issues. She honestly thought it was funny, even though she'd watched me have anxiety attacks all year over all of it. She also said wanted to make sure I was close friends with her and not our other roommates, because she "didn't want to lose me".
Yeah, I basically dropped the friendship" real quick after that. I still think about the entire situation and how fucking crazy and childish it was. I'm also a bit ashamed that it took me until that moment to really step back and see how horribly she treated people. She still sometimes messages me and asks "why we grew so far apart".
Ya, uh, It's because you're insane.
Emily and I are pretty good friends now, btw. She and I are going to be bridesmaids in Hannah's wedding Saturday! :)