Everyone, regardless of what they say, just wants someone in the world to love and be loved by.
That moment when you realize a relationship will only be one-sided is one of the most abrupt growing up moments in anyone's life. No one can help, just provide context and the wound will never really heal. The pain just gets duller, or more likely, you learn to insulate.
If you're lucky enough to not have experienced this, you have my genuine envy.
Bottom's up for the brothers and sisters that have.
Edit- spelling corrections