Why would a friend that calls you everyday and text you talk bad about you to another person?

A male friend of mine calls me everyday, text me during the day but I recently found out he said negative things about me to another person he thought he could trust, He was making it seem like I was the one texting and calling him and making it seem as if he was doing me a favor being my friend. I don’t understand why he would talk about me in a negatively and call me everyday. I
Updates
+1 y
That’s not the case she’s his relative.
Updates
+1 y
What else could it be?
Why would a friend that calls you everyday and text you talk bad about you to another person?
Post Opinion