The document discusses using a multimap in C++ to represent the relationship between a "pretty gal" and a "gentle guy". It maps the gal's "dazzling smile" to the guy "in love" using pairs and the multimap. It inserts this pair into the multimap and then searches by the gal's smile to output that the guy is for the gal's smile. The document suggests this represents the bond between a loving couple completed by each other in the multimap.