It kind of stings when this happens.. ok, sometimes it stings a whole lot, but it teaches us valuable lessons about life, love, and friendship. May you never lose your sense of "doing that much" for someone else.
"Stay nice even when others are not." Easier said than done. There comes a time that being nice isn't even an option anymore. When you've been bullied, hurt, and abused over and over again, being nice isn't possible. There are some people I will never be able to be nice to, and it's not my fault. It's theirs. I'm not a mean person. They conditioned me to behave that way towards them.