Astrology regarding partnership
Chinese philosophy and medicine dispose with the concept yin-yang. The same concepts occur in the myths and stories of the whole world. Carl Yung named them Anima and Animus and under those names this concepts are used in analytical psychology, even though with more concrete meaning than in Chinese cultural tradition. In astrology they are understood as inner images symbolized by female and male planets. Symbolically, they can signify our inner partner.
Our relationship with a partner depends much on the image of the inner partner we have and on how we cooperate with this image. If you are disappointed with a partner relationship or if you realized that the same pattern repeats many times and you are unsatisfied with that, perhaps it means that you do not cooperate well with the inner image of your partner who naturally asks you to be accepted.
It is hard to predict whether one relationship will last or not. It is also very hard to say if someone would be a good or a bad partner to a certain person because, potentially, it is possible to find many partners that would be compatible to one person, which does not necessary mean that, with all of them, it would be possible to establish a love relationship. Nevertheless, astrology can say much about concrete relationships and can discover in particular which type of energy flows there.