Every feeling just fades away with time if you don't have something pushing you to keep it but I don't think it's same with one sided love. But like in family and friends,we are in constant touch with them, so the love stays. But suppose you know a friend of yours is not a good person or he thinks bad about you, you let him go and you feel the emptiness for a while. You will slowly understand everything. Sometimes later too you relate somethings to them, like places you have been together, the things you used to do but it was that time. It was good. Now it's something different and it's good too. And you have to learn to let go people. You have to learn to leave when you feel unwanted, unhappy. You have to learn to cry to get over them and create a new bridge and move on.
