Should I be sad if my best friend doesn't care that I'm still in love with her?
How do you feel knowing that she doesn't care?
I'm very hurt by this. It's been a while since I learned that she is probably not interested in me anymore.
It's understandable to be upset, but you can't assume that your friend will feel romantically about you just because you feel that way about her. I think you should try your best to disregard your romantic feelings if you want to continue being friends with her.
It's not like I don't try.
It would be best to clarify your feelings and your friend's feelings for you by having open and honest communication with her.