I like that the movie criticised the niceguy type. Or rather the whole dating scene. The whole thing started cause his "friend" didnt tell him they were casually fucking and then while the wish wasnt something he couldve expected to work, he then repeatedly fell back into a horrible relationship with her and even while knowing kinda soft-raped her. He also dragged the goth girl through a bunch of shit and caused her(absolutely fucking horrible but narratively beautiful) death. He then did kinda save the main girl but left her with all the trauma and shit as you said. Still, id say the highlight of the movie is easily the goth girl getting murdered. I never want to get close to that scene ever again cause its just so narratively, emotionally and also visually disgusting. Its the only time that i hated a jumpscare not because its unneccesary but because i got disgusted from it. Color me impressed by obsession.