One of the important factors is communication, talking with your partner about your feelings, desires and needs, the main thing is not to be afraid to express your thoughts and emotions, this will help you better understand each other. The second factor is patience. Quality patience is what is necessary in a relationship, you should not immediately stop talking or hold a grudge against your partner if he does not agree with your opinion, it is worth trying to understand his point of view and then it may be possible to find a compromise. Respect each other, accept your partner for who he is, do not force or try to change him without his will or consent, this will only make it worse and it will be much more difficult for you to build further relationships. Take care of your partner, be interested in his affairs, help in any situation, or at least try to help, support in difficult moments of your joint journey. And most importantly, love each other sincerely and without jokes and games.