Boyfriend problems

Stephany • 24 11/14/16🌷 11/20/20 ☘️
Me and him been fighting constantly. When we fight then I say then leave. Bye. But I want us to be good. We been together for almost 6 months. And I am really petty coming to things. I need tips how do you guys last long ? Do you fight ? Give me tips on making my relationship better please. I'm in love with him and I really don't want to lose him and me and him both change after sex and fight more is this normal?