Why did he feel a need to call me?

I caught this guy cheating on me with another woman. I texted him that I found out and that I was ending things with him. I made sure to include some details about the other woman so he would know I was telling the truth.

In response he called and left me this long message of how it wasn't true. Why did he even bother to do this? We both know he's lying. Did he call to try and lie so I would not say anything to the other woman? Or, just to try and gaslight me into staying with him? Which by the way I never contacted the other woman and don't plan on it.
Why did he feel a need to call me?
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