By pretending to be "glued to each other's side," Simon avoids mothers looking to marry off their daughters, while Daphne becomes a "prize" coveted by other men who suddenly see her as more desirable because a Duke wants her.
in any room I entered. Come. You can speak. I understood you well enough. And I will help you to overcome this stammer of yours. . Scraps from the loft Bridgerton S01E02 Recap - TV Tropes
On his father's deathbed, Simon vowed that the Hastings line would die with him as the ultimate act of revenge. The Subplots Bridgerton - S01E02 - Shock and Delight [Transcript]