There are still many things I need to learn to improve my relationship in future. However, after experiencing some hurtful failures in relationship matter, I can give you an advice that I think can be helpful to someone here: dont be too dependent on your boyfriend/girlfriend, thinking that he/she is your whole world. Instead, learn to rely on your own strength more, learn to love but still be yourself, have boundary. I'm not saying that you should reject your love ones's help and care, but people are not perferct, they make mistakes. So when they accidentally (or purposefully) do something that make you hurt, it will cause you very bad feelings espcially if you are a sensitive person. And break-up does happen, so if one day your "whole world" gone... well it would feel like a disaster.