I snitched on my ex’s drug dealer

I snitched on my ex girlfriends drug dealer, and he got arrested 10 years ago I was dating a really toxic woman. She cheated on me (found out later), regularly verbally abused me while drunk and high on coke, and even threatened to call the police with made-up allegations. I stayed way longer than I should have. I asked her to stop using coke—she said she did, but was just hiding it. One night things escalated to another level and I finally left after she became physically violent, and said some of the most disgusting things I’ve ever heard toward another person . I blocked her and everyone connected to her and disappeared completely. The guy supplying her coke was a close friend of hers as was his fiancée. Two years after the fact, I submitted an anonymous tip with details about his operation. He was arrested with \\\~15 charges, including first-degree offenses, a week after getting engaged. He got 10 years. I completely forgot about the tip I submitted. I only found out when I saw his mugshot on a local news website. and it was my tip that lead to the arrest