I never understood when people would say it's terrible being the person who loves someone more than they love them until now. But that's how life is right.
That's how life can be at times. I wouldn't say that's how it "is" because life is never static. It's always twisting and changing. I am sorry you are in this place right now, but someday the right person will appreciate and adore you, as you will him or her. Just can't give up. Peace to you.