u/Far-Lime-7080

Am I the asshole for doing a school project all by myself? My friend will call him Zack, who is known to be very lazy, gets high, and plays VR all day. He was my partner, and during class he'd always go to the Library to do whatever. So I did the whole project and he got upset at me and I yelled at him. I know childish; but it was super upsetting and now he's just working on it.(it was due Sunday I finished the project Thursday) Now his sister is mad at me which is ls my best friends girlfriend. AM I A DICK?