Why does link make Tracy cryof hairspray?

In the musical "Hairspray," Link Larkin makes Tracy Turnblad cry during the song "It Takes Two" when he shows affection for her but also expresses the societal pressures and expectations that separate them. Tracy is overwhelmed by her feelings for Link and the reality of their different social standings, leading to her emotional reaction. The moment highlights both the challenges of young love and the themes of acceptance and self-worth central to the story.