Two Monkey/Leo together is a 95-100% mirror, two natural-born showstoppers who both landed the starring role. Both halves crave attention and will do nearly anything to get it with a little Monkey-shine. When two such performers meet, the audience and the act become the same thing, and the show is genuinely a riot.
Chemistry is dazzling and loud. Both Monkey/Leo halves bring charisma, play, and a frenetic lust for novelty, so the spark is immediate. The bedroom is fun and theatrical. The risk the canon flags is the fear of commitment, so make sure the novelty hunting points at each other rather than away.
Conversation is a fast, funny, two-handed comedy act. Both halves are quick and entertaining and love to hold the floor. The danger is that two people who both want the spotlight can spend the whole conversation performing and none of it listening, so trade the mic back and forth on purpose.
Friction is, frankly, the mess. Both Monkey/Leo halves share the Leonine lack of tidiness, the canon's pizza crust under the sofa and watermelon rinds under the bed. Two of you means double the disorder, in the home and in the schedule, and when the chaos piles up, so does the bickering.
What each Monkey/Leo needs from the other is a little common sense and a lot of follow-through. The canon warns you not to let the chase for novelty separate you from the person who could really know you, so do not be afraid of commitment when the time is right. Clean up, show up, and the spotlight gets warmer for two.
At 95-100%, this is one of the most joyful, high-wattage matches the formula scores. Two Monkey/Leo throw the best party in the zodiac. Just remember to take out the trash afterward, together.