gf HELP NEEDED

okay so lemme tell you a story

i was dating this girl lets call her emma for 3 months but i was friends with her for like 2 years before that everything in the relationship with emma was going strong for 2.5 months and then my best friend lets call her amy was saying that i wasnt interested and stuff like that then we broke up then i realized i loved her in september

i told her but shes dating another girl that is toxic for her and she cant see that but everyone else can and everyone thinks she should be with me and im good for her but her girlfriend wont even let me talk any sense into her and she is stuck on all the things amy was telling her her and her gf are coming to my school next year and emmas gf taylor is going to try to punch me

and everyone is going to stop her and that will just be a shit storm so i need help like major when and how can i get her back bc i can feel myself dying a little more everyday

i need to break them up without ending up dead and not being hated by anybody i need to do this i need help give suggestions and give me methods please im begging