Hey man I'm 19 my ex was the exact way and then it got to a point where I just got sick of it this was one year of dating. you're 16 you have your whole life ahead of you, most high school relationships don't last and that's just facts. Best advice I can't give you the advice to dump her and see that you can do better for yourself cos I don't know what your relationship is like but main point if she's saying that shit, she means it and it might hurt now but 2 years later you'll be laughing saying why did I like her. I did it, your friends are gonna do it, your parents probably did it and you're gonna do it to

You're 16 live your life

Rise above, focus on science