When you open the door other person eventually stops knocking , don't they? Similarly, a person shows you importance when attracted towards you and does innumerable practices to show you their love. They try to come inside the locked heart. And someday, when you let them in, they slowly and gradually stop showing the love. You start feeling cheated and it is hard for them to understand what is making you sad. What's the solution then? Not opening the door? Nah, it has to open for someone. The solution is building more doors inside the room. Let them knock. Don't give every key to them. In simple words, don't show everything about yourself to the person you decide to make your lover. Have some hidden things inside, let them struggle to know you more. Hence, create moor doors to bring back the things that our lost and keep the spark and fire alive forever.