Love
Love and shared values is the basic assumptions of a good relationship, however it is of course also important to have good experiences together and both an individual and joint life. So give space to each other, but also make sure that you have shared experiences that protects the love and makes the relationship better and closer. It may be surprising your partner with little things, a walk in the forest or at the sea or if the economy allows it a small weekend stay only the two of you. It brings new energy into the relationship and joy to life.
