Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Ohh boy this whole thing has been a rollercoaster. Where to begin...

I live with 4 people. One of my roommates and I do not get along. At all. Despite this, we have a lot of mutual friends, so we often end up hanging out together. 

A couple nights ago, my friends and I all go out  She's there too. We go out to a local restaurant/bar and just generally have a good time. Recently, my ex and I broke up. While we were eating, me and the girl (let's just call her Sarah) got into a disagreement. I'll spare the details, but it essentially lead her to say: "Wow, no wonder your ex broke up with you." That got some looks from the group, but I decided to keep quiet about it. The night carried on. I was pissed.

We decide to head back home. The way our carpooling worked, it was just me and her in her car, with her as the driver. She had a couple drinks at the restaurant... this will be relevant soon.

While we were in the car, I did not say a damn thing to her. As we were driving home, I saw blue lights flashing behind us. I could not keep from laughing a bit. When we stopped, the police officer came up to us he and Sarah were talking. Then a great idea came to mind:

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Me: "Excuse me officer... I feel obligated to tell you that my friend was drinking earlier. I do not feel safe." In reality, she was probably going about 7 or 8 over the limit. Her driving was fine. But I just about had it with her.

sarah gave me the dirtiest look, then the cop told her to step outside. Sobriety test was okay, but we live in a state where she needs to take a breathalyzer if asked... and she did. She blew barely over the legal limit. Cue the arrest and me calling an uber.

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So am I the asshole here? My friends don't know the full story yet- basically that I snitched on her. She is facing a world of trouble right now.

outing my roommate and getting her arrested