<human>: Can you provide a brief rundown of the text in within 3 sentences?

We were dating for about 3 years and for the first 2 and a half years it was amazing.. but we moved in together and it seemed like everything went to hell. We were always fighting and arguing and near the end I was looking forward to going to work because it would get me away from her. I knew the relationship was toxic and bringing me down. It was really a mutual breakup and neither one of us really resented or was mad at the other.

Here comes my dilemma. I recently found out (again, 2 months later) that she is dating someone else now. I have been completely fine for the entire breakup, I go out regularly, hang out with my friends, and have had a romantic partner (but nothing more than sex, no emotion). All of the sudden, since finding out she is with someone else, I miss her to no end and I feel like I want her back.

I can calm myself down by reminding myself how unhappy I was with her at the end and how our relationship actually brought out the worst in both of us. Just looking for some advice on how to sort of get okay with the fact that she is dating someone, and maybe if we should stop talking and communicating all together. We still talk from time to time.
<bot>: Broke up with my ex and was fine until I found out she was dating someone else. Now it bothers good.