AITA for exposing my roommate’s secret addiction even though she begged me not to?

I (26F) live with my best friend Mia (27F). We’ve known each other since college and decided to move in together after graduation. We’re both working full-time, have similar interests, and overall, get along really well. It was supposed to be the perfect living situation—until I found out something about her that changed everything.

A few months ago, I noticed some unusual behavior. Mia had always been the kind of person who liked to unwind after work, but lately, she seemed off. She was more irritable, often staying up late into the night, and she started missing work or being late. I didn’t think much of it at first, but then I noticed something strange—there were empty prescription bottles hidden in her drawer. I don’t want to jump to conclusions, but I knew they weren’t prescribed to her, so I confronted her about it.

Mia admitted she had developed a prescription drug addiction. She told me she started using painkillers after a knee injury a year ago, and it spiraled out of control. I was shocked. Mia had always seemed so put together, and I couldn’t believe this was happening right under my nose. She begged me not to tell anyone, saying she was trying to get help and didn’t want her family or friends to find out. She promised she was working on it, and I agreed to support her.

But over the next few weeks, I started to notice the same pattern. She’d go on these “binges,” using the pills to cope with stress and pain, and then go days without any, causing her to get agitated and unpredictable. It started affecting our living situation, and I could feel the tension growing between us. She became unreliable—she’d say she was going to meet me at a specific time, only to cancel last minute or not show up at all. It was impacting my own life, and I was worried for her. But it wasn’t just that—she wasn’t following through with her promises to get help. Every time I brought it up, she’d promise she was working on it, but nothing changed.

The tipping point came last week when I found her passed out on the couch after I came home from work. She had overdosed, and I had to call 911. It was terrifying. Thankfully, she was okay after being taken to the hospital, but it was a wake-up call for me. I couldn’t let this go on any longer. I had to step up.

I told Mia that I couldn’t live with her anymore unless she sought real help. She begged me not to tell her family. She said she’d “handle it herself.” I told her I couldn’t be part of this anymore, and I was worried about her safety. I called her parents and told them everything. They were devastated, but they were thankful I had stepped in. Mia was furious with me for going behind her back. She said I had betrayed her trust and made everything worse. She accused me of being selfish for telling her parents, but I didn’t know what else to do. She was in denial, and I felt like I had no other option.

Now, Mia is refusing to speak to me. She says I ruined our friendship, and some of our mutual friends are taking her side. I feel terrible for breaking her trust, but at the same time, I’m glad I did what I did. I couldn’t live with myself if something happened to her and I hadn’t stepped in.

So, AITA for exposing my roommate’s addiction even though she begged me not to?