He keeps lying to me about small things

I’m getting tired of it. It’s all stupid things then I ask him multiple times the story changes and I find out that he he was lying. I have known him for 4 years so know how he talks and acts. So when I call him out and he lies it hurts. His excuse is that he doesn’t want me to be mad at him but I get mad because he lied and then I end up catching him.