The main thing that all relationship needs is trust. Because without truth there would be no relationship. If one partner in the relationship doesnt trust the other it’s gonna lead to complications and arguments. Another main thing in a relationship is honesty. Without honesty you won’t get nowhere in the relationship. If you tell them that you love them, actually mean it because if you say it with no meaning the other person that it was said to is gonna think that you actually mean it and get their feelings hurt when they find out you didn’t mean it. No relationship is ever perfect. Everyone argues and everyone has their disagreements. But you should never stop trying.