: In the Netherlands, the "three kiss rule" dictates a standard greeting of three alternating cheek kisses for hello and goodbye [26].
From the first nervous encounter of adolescence—often viewed as a fearful or forbidden rite of passage—to the comfort of a lifelong partner, the kiss remains one of humanity's most essential forms of expression [2]. It serves as a sensory experience involving texture and action , defined by warmth, softness, and the unique connection between two people [20]. : In the Netherlands, the "three kiss rule"
: In modern dating etiquette, many use the "90/10 rule," where one person moves 90% of the way to signal intent, allowing the other to close the final 10% and confirm consent [29]. : In the Netherlands