You absolutely *should* leave, for your own sake. Being in an extremely one-sided relationship like that will absolutely fuck up your self-worth in ways that aren’t easy to fix (ask me how I know). If you really want to, and you think it’d be worth the effort, you could bring this up with her and let her know it’s been bothering you a lot. But if you can’t come to a satisfactory resolution, it’s time to jump ship