Most relationships fade not because of lack of passion but because of lack of attention and intentionality. To be able to maintain a long term relationship one needs to be able to self regulate, correct, and lead in supporting and meeting their significant other's needs. If you can control your attention and what you do with it, you can definitely build a long lasting relationship. It all begins with ourselves. We blame others while we can't even notice what's going on with people in our lives.