"Sometimes we were the one who gave our partners some reasons to find someone else because we were trying to mold them what we wanted them to become". This is what we are used to do or had been experienced. Where in fact, You don't have to pretend, disguise your personality or actions and be somebody that your boyfriend wants you to be because relationship is a matter of acceptance. Understand your partner, don't make her world change instantly, let her change the way how people change in a natural way.