Leo is not going to win Cancer’s affection by being the life of the party and demanding all his attention. Nor will her excessive pride endear him. In short, she has to turn down the heat.
Fire and Water
Leo is fire, Cancer is water. Leo doesn’t want to put on such a high flame that Cancer dries up his emotional reserves. Rather, bringing him to a low boil is the ideal effect towards which she should aim.
Fortunately, Leos give as well as they receive, and if the lioness can provide warmth to Cancer’s hearth, she will drive some of the mustiness out of his home. Modulation of the thermostat is key, for a Leo set to “11” will drive the crab into his shell. Leo may have boundless energy, but Cancer needs to conserve.
Sun and Moon
Leo is ruled by the Sun, Cancer by the Moon. The Sun is an everpresent globe, always available to provide heat. The Moon fluctuates, appearing different every night. Part of him thrives on the light of the Sun, yet he needs that bit of darkness to collect moisture and delve into his own mysteries.
A Leo girl will win his heart if she can accept the inconsistency of his moods, and not demand that he reflect her light back to her if he’s in a new moon phase.