What is the perfect single word to mean two lovers have become one?
That is actually what the word “Marriage” is supposed to mean. When you become so completed by another, you have a hard time distinguishing where one ends and the other begins. Marriage was never meant to be entered lightly and was also meant to be life lasting. It was Moses that gave the people divorce, yet Jesus spoke of the sacred union of two becoming as one. Yet society has not shown an aptitude for listening to those who share words of wisdom. I realize this is probably not the word you were looking for, but it is the word you asked for.
