Here is some great wisdom. It will most likely sound strange to your ears. In fact we have been raised with almost the exact opposite message coming from the modern world.
Every religion, every culture, has some version of these. These are moral principles. These are the natural laws of love. Love does not kill, love does not bear false witness, love does not commit adultery. (Not real love) Remember “Love the purpose of life is the willing of good of the other person.”