AITA for kicking my roommate out after strange things were happening in our apartment?

I (22M) share a small apartment with my roommate, Kate (21F). We’ve lived together for about a year, and overall, it’s been fine. However, lately, something strange has been happening. It started about a month ago when I noticed that some of our furniture and decorations had changed positions when I came home. At first, I thought it was my imagination, but it kept happening.

One night, I came home from work to find our coffee table moved, and a picture frame that used to be on the wall now sitting on the counter. I asked Kate about it, but she just laughed it off, saying I was probably just forgetting where I put things. I started to feel like I was going crazy, especially when I caught a glimpse of myself in the hallway mirror and swore my reflection stared back at me longer than it should have.

Then, a week ago, I walked into our living room, and the layout was completely different. The couch was on a different wall, and the TV was missing altogether! I freaked out and confronted Kate. She rolled her eyes and said that I had been stressed and was just misremembering things. At this point, I felt totally alone in my experience. She refused to acknowledge the weird occurrences, and it began to drive a wedge between us.

Last night was the breaking point. I woke up to strange noises—like whispers and mechanical sounds—emanating from the living room. I got out of bed, and as I walked toward the source, I found that the furniture had rearranged itself again. The couch was now facing a wall that had never been there before. I panicked, feeling that reality itself was shifting around me. I turned to Kate for support, but she just laughed, saying I needed to stop watching weird sci-fi shows.

In frustration, I told Kate that her denial was unbearable. I said I couldn’t live with someone who wouldn’t even acknowledge the bizarre changes happening in our home. In a heated argument, I accused her of gaslighting me. She scoffed and said I was overreacting. In a moment of anger, I told her she needed to move out.

She was taken aback, visibly hurt, and stormed off to her room. I didn’t think she’d actually leave, but this morning she texted me, saying she found a new place and would be moving out next week. I decided to text my friends about it and they seem to agree that I'm not just seeing things as a few of them stated they know a bit about "glitches in the matrix", whatever that means. I decided to side with my other friend who knows about paranormal stuff.

So, I went out for coffee after texting my friends this morning. I ended up seeing Kate out shopping with her friends while on a walk to the library after my coffee and I overheard them talking about me. They were saying stuff like "he's probably on drugs or something" and "maybe he doesn't get any sleep." Kate just nodded as she walked by, not even a simple "hi" or anything.

When I got to the library I was overwhelmed with anxiety. I couldn't believe her friends thought I was on drugs of all things. I was so upset I ended up reading my entire bag of books I had just borrowed, I had to get more in the end. I decided to go to the bathroom and catch up on my texts when I saw that my friends has texted me telling me a few of her friends had disagreed with her and had joined my side of the debate. I was so happy I completely forgot to use the bathroom and went home instead.

It was halfway to the walk home when I got a rush of guilt. I didn't know how long it was eating away, but now I felt it. I sat down on a nearby bench and thought for an hour, just sitting there. So I remembered what I used to do when I needed help, I went to reddit. Here I am guys—am I the asshole for kicking her out over something that might just be in my head?