[Marriage] ...the deep, deep peace of the double-bed after the hurly-burly of the chaise-longue.

In this wry, theatrical metaphor, Campbell contrasts the supposed serenity of marriage (“the deep, deep peace of the double-bed”) with the turbulence and improvisation of sexual or romantic adventure (“the hurly-burly of the chaise-longue”). The bed stands for domestic stability, routine, and sanctioned intimacy; the chaise-longue evokes the drawing-room, flirtation, and a more performative, possibly illicit erotic life. The line’s humor depends on deflating idealized notions of marriage by framing it as a kind of restful aftermath—less passion than recuperation—while also acknowledging the allure and chaos of desire outside (or before) marital order.