Counterintuitively, the most effective strategy to fill your own "love deficit" is to focus on making the other person feel loved. This action triggers the powerful principle of social reciprocity, compelling them to return the attention and care you've demonstrated.

Dating algorithms that match users on objective similarities are largely ineffective. Relationship success is better predicted by *perceived* similarity—a cognitive bias where people who already like each other actively find and emphasize commonalities, a form of motivated reasoning.

By altering your behavior towards someone, you can elicit a different side of their personality. This new response, prompted by your actions, fundamentally changes how you perceive them, as shown in the 'Dan the Whisperer' story.

People with low self-esteem often only want partners who don't want them. If someone kind and available shows interest, their good judgment is questioned ('there must be something wrong with you'). Conversely, a disinterested person's rejection validates their negative self-view, making that person seem more valuable.

Many enter relationships not out of genuine connection but to avoid confronting personal fears, insecurities, or a lack of purpose. The relationship becomes a convenient distraction from necessary self-reflection and personal growth.

While early theories proposed that external disapproval strengthens a couple's bond, an "avalanche" of modern research has debunked this. Having the approval and support of important people in your life makes a relationship significantly easier to maintain and more likely to succeed.

People are more effective at deceiving others about their true motivations when they first deceive themselves. Genuinely believing your own pro-social justification for a self-interested act makes the act more compelling and convincing to others.

An extreme crush on someone is often not about them, but about a "misplaced ambition." We see traits in them that we feel we lack (e.g., confidence, talent), and their acceptance of us feels like a validation of our own perceived shortcomings.

The 'Michelangelo Effect' suggests positive affirmation can unlock a person's potential. Like Michelangelo seeing a statue within a block of marble, your belief in someone's ideal self helps 'chip away' at their insecurities, making that potential a reality. What you affirm is what you become.