Marriage. Perhaps the greatest expression of love. The vows and promises of marriage promise unconditional love. True love, as expressed in true marriage, is one person voluntarily making the decision to unconditionally act in the best interest of another for as long as the other shall live. There are no conditions. No amount of sickness will cause one spouse to stop caring or acting in the best interest of the other spouse. No physical condition can become so bad as to cause the other spouse to refuse to act in the best interest of his or her spouse. In marriage, the two become inseparable—only death, and to some, note even death, ends the voluntary acts of caring and loving. The purest manifestation of love is quite arguably seen in marriage.
And two people in love. Is there anything in this world more enticing, more romantic, more dramatic, more expressive than two people madly in love with one another? The things people do when in love. The things people say when in love. The commitments people make when in love. Nothing compares.
"I came, saw, and overcame: for your brother and sister no sooner met, but they looked; no sooner looked, but they loved; no sooner knew the reason, but they sighed; no sooner did they sigh, but they asked one another the reason; no sooner did they know the reason, but they sought the remedy: and in these degrees have they made a pair of stairs to marriage, which they will clim incontinent, or else be incontinent before marriage. They are in the very wrath of love, and they will together; clubs cannot part them."
In the very wrath of love. Yes, love does indeed seem to have a wrathful side. "Clubs cannot part them" This is to say, not even angry men with clubs can beat the two lovers apart. Shakespeare had a way with words.