AITA for dating my colleagues ex?

AITA for dating my colleagues ex?

I had a group of work friends for about a month when I started my new job. There was another guy I worked with named Matt who was dating my other coworker, Rose. Her and I didn’t talk much due to her being freshly eighteen and the age of my little sister, I, twenty-two, and Matt, twenty-five, were friends. Rose and I worked in the same department for the start of her job, I taught her the basics and also worked with others in my department to help her. Later on, Matt and Rose broke up. Matt was twenty-five and didn’t feel comfortable dating someone who was freshly eighteen.

After these two broke up, Rose was hysterical. She was crying in her office, and her summary was he wasn’t aware she was freshly eighteen, and she was too clingy. I understood and talked to her a bit so our work relationship wasn’t ruined. It wasn’t until after about a week she starting talking to me about this everyday. I attempted to comfort her, but also tried to help her understand that it wasn’t a healthy relationship. I told her it was better to just get away and not date for awhile. She found me on my socials and ranted to me everyday. I didn’t feel comfortable with this, although I decided to help her. In the past, I’ve heard that Rose had been depressive slumps after breakups or events, and this was over-bearing.

Two months goes by, and Matt got moved to my department. We hit it off as friends and then establish a friendship outside of work. He tells me one night that he came home and his apartment was destroyed. It wasn’t a home intruder, but instead Rose who had the keys still. I came over and helped him reorganize his entire apartment, including helping him reorganize his PC that she had gone through completely. This wasn’t the first time something like this had happened, just the first time something this major. She later resigned two weeks later and stopped working in our department. We were all confused, since she left without a trace and moved to a different department on a different floor.

We accept that, and she resigns. Her and I have only known each other for about two months at this time, and her and Matt about three and a half. After another month Matt and I go on an official date, and we hit it off. We hangout more and more, and forget everything that happened. I had learned that Rose had mental breakdowns in his apartment, acted on impulsive thoughts and caused him to end up in the hospital, (He has atrial fibrillation), and even more. They had dated for about three weeks, and then called it off on good terms. About three weeks go by, and Matt and I post a selfie of us hanging out. In the matter of two hours, I get spammed called from a no-caller ID. I finally answer, and it’s Rose hysteric and drunk. She rambled for about twenty minutes, and then hung up.

About another two weeks go by, and I get asked to come into one of my other colleagues offices. She starts talking about what I did was wrong, even if Rose and I had no relationship outside of her talking to me about Matt. A day goes by and I keep getting calls from no-caller IDs, going on about Rose and Matt. I’ve talked to Matt about this, and he said this was the exact reason they broke up, her immaturity. We finally decide to just do our work, even if they spread rumors around the office. Rose then comes back to our department, and spews more and more, at this time, they had been broken up three times as much time as they had dated.

I understand her and I had a bond, but AITA for dating Matt?