I expected nothing when I gave it. When I needed it back, and it was not received, I could not help but remember how nice I had been to her, and feel awful that it was one-sided.
All I'm doing is telling people that kindness spent towards forming relationships with this girl will be one-sided, based on my experience. This is not why I do things for people, but it is why it hurts when they don't remember or reciprocate what I did.
Just one more nail in the coffin, i guess.