I met this girl on vacation. She was so cool, and I liked her a lot. I caught feelings for her. However, I had a girlfriend at home. I didn't like my girlfriend all that much. To be honest, it was a relationship that should've been over before that vacation.

I introduced this girl to some other people I met on that vacation. One of the guys started flirting with her. I was jealous, and drunk, and when she left, I told everyone I liked her.

Of course, when they saw her again, they told her. She asked me if I liked her. I had to be honest and tell her about my girlfriend. She looked so disappointed.

I had to cut her off completely. Rejected her Instagram request. I learned later on that she became more reclusive after what I did, and she'd get angry more easily. She suffered from bulimia, and after the vacation when I met her, it got worse. She also started talking to herself. Like, she'd hear voices in her head and have full on conversations with whoever she was talking to. One night, she even went running around the park at midnight in her pajamas because the person she was talking to told her to find an ancient sword that would bring her eternal strength. Her brother told all of us this. He hates my guts. He says that before the trip, she was relatively "normal", and now she's convinced that she'll never be good enough for anyone