In the moment described, the character experiences an overwhelming rush of emotions when kissed for the first time. The intensity of the sensations is so powerful that it feels as if something has fundamentally changed in her, akin to a medical emergency like an aneurysm. Her heart races and she becomes engulfed in a whirlwind of feelings, highlighting the depth of her emotional reaction.

This profound experience emphasizes the singular nature of romantic connections, where a simple kiss can evoke a torrent of feelings. The character clings to the word "this" amid the chaos, indicating that this moment is significant and transformative, signaling the inception of deep emotional ties that define her relationship.