Here are a few ways emotional intelligence can help build long-term relationships:

Better understanding of your emotions. If you know what emotions you feel in different situations, you can better explain your feelings to your partner, and not just explode or withdraw into yourself.

Better understanding of partner's emotions. When you know how your partner is feeling, you can understand their point of view and empathize with them, which helps strengthen relationships.

More effective conflict resolution. If you know how to manage your emotions, then you will be able to keep your discontent in check and resolve conflicts in relationships more effectively.

The ability to express your emotions in a positive way. If you know what words and actions make your partner happy, you will be better able to maintain relationships and create a positive atmosphere in your couple.

Better understanding when to stop. If you know how to feel the boundaries of your partner, then you will know when to stop and not cross the line, which builds trust and respect in a relationship.

In this way, emotional intelligence helps us build long-term relationships by strengthening our ability to understand and manage our emotions, understand the emotions of our partners, and manage relationship conflicts.