Am I the asshole for exposing my ex to his girlfriend?

Here's some context;

We starting dating in October 2021, and I decided to move my life and travel with him for his job until mid-2023. The relationship ended "mutually". About a year after the break up, he reached out to me and said he wanted to try again. I told him I’d need time to leave my job and relocate but was willing, i would ultimately break off my currently "relationship" thinking things could work wit him. Once i told him i would need time, that’s when he admitted he had a girlfriend and claimed he needed to end things with her first.

He ultimately chose to stay with her, but continued contacting me anyway. Over the following months, he repeatedly reached out, disappeared, and reappeared, while misrepresenting his relationship status. I eventually cut off contact.

After about another year of this behavior, his girlfriend contacted me directly and confronted me about his behavior. At that point, I shared messages, call logs, and screenshots showing that he had been communicating with me while telling her otherwise and selectively editing conversations to hide it.

Afterward, he accused me of ruining his life.

So—am I the asshole for telling the truth?