In a relationship, a Leo tends to be very passionate. Their fiery nature will heat things up with affection and adventure. They choose their mates based in their ability to be dominant in a relationship, so they will often be the leader out of the two partners. In a relationship, a Leo needs to be the center of attention, as he believes that he deserves to shine the brightest in any situation. Generous and giving, a Leo will create a wonderful life for the apple of their eye, but must always be nurtured because they do tend to get insecure from time to time.