This goes back to the "girls just want to have fun" vs. "I want to be in a committed relationship with a reasonable give and take" issue which comes up a lot.

You don't need to break up, but you need to decide whether you want to be free, do what you want, have fun, guilt free, and break up, or you want to be an adult and get on a schedule and schedule your time and sleeping so you get healthy amounts of sleep day in and day out, and be in a relationship with someone who does the same.

He's not mad you're sleeping in, he's mad you're not being a team player and maybe because you're not taking care of yourself. If you're asleep half or most of the day you can't do this or that or anything. What are weekends for?

Maybe you don't know that you cannot make up for lost sleep during the week by sleeping in on the weekends. Maybe there's something medically wrong with you if you need more than eight or nine solid hours, and seven in a pinch with some coffee. Maybe if you got more exercise, which is something people generally prefer to do in the morning before it gets too hot.