u/ChampionshipLost4542

I texted his ex girlfriend after he cheated on me and he told me that I was crazy for doing so. He had been cheating on me for a 1.5 months, he called her fat and her dog fat so I told her that. We’ve broken up but he told me he was MAD at ME even though he was the cheater. I only told her the truth and exposed him for being a cheater. Am I crazy for doing my that? Or is it wrong?