I confronted my narcissistic ex new fiance. Am I wrong?

I decided to confront the current fiance of my narcissistic ex. He always denied being with her. He cheated on me with her. I did so because he likes to still reach out to me periodically to test if I will let him use me again. I've been ignoring him but of late got irritated and had a reaction.

Well, she basically denied being in a relationship with him. She tried to make me think I was crazy. There's photos of them together on social media acknowledging they are a couple even recent videos.

According to her she's not in a relationship with him. And, stated he actually has another girlfriend.

My questions are was I wrong for my actions? Why is she denying him to me but publicly flaunts him as her man. He does the same.

I suppose a twisted part of me thought this would anger him into leaving me alone. As for her, yes I wanted to trigger her a bit. I went through so much hurt with him that I think I just had a dumb moment.
I confronted my narcissistic ex new fiance. Am I wrong?
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