Happy, thrice happy and more, are they whom an unbroken bond unites and whose love shall know no sundering quarrels so long as they shall live.

The line celebrates an ideal of steadfast partnership: those joined by an “unbroken bond” are not merely happy but “thrice happy,” because their affection is durable and not eroded by recurring quarrels. The emphasis falls less on passion than on concord—love proven by its ability to endure daily friction and remain whole over a lifetime. In this sense, happiness is portrayed as a moral and social achievement (self-control, mutual respect, fidelity) rather than a fleeting emotion. The hyperbolic blessing (“thrice happy and more”) also gives the sentiment a proverbial, almost epigrammatic force, as if offering a maxim about the rare good fortune of lasting harmony.