Reciprocating and "just being kind" are related concepts, but they are not exactly the same.Reciprocating: Responding kindly to someone's actions."Just being kind": Doing good deeds without expecting anything back.
we enter and exit people's lives in the same way that others enter and exit ours. i believe that everything happens for a reason, and that if something is meant to happen, it will. It will happen if they are intended to be in my life.
you can't, it's difficult, but since you're asking, you definitely realize it's not a favorable scenario. you simply must act. simply leave without looking back. it will be difficult and lonely, but it will be worthwhile.