As Mercury transits Sagittarius, squaring your composite Sun in Leo, you may face a series of challenges centered around communication and ego clashes. This transit is known for expanding thoughts but can also lead to bouts of overconfidence and zealous convictions, creating friction in your mutual dealings.

Being ruled by Jupiter, Sagittarian transits tend to amplify whatever they touch. In this case, Mercury's influence could result in grandiose thinking, prodding you to bite off more than you can chew. Tread carefully with ambitious plans or ventures. Your Lion-hearted boldness might lead you to divergent viewpoints, causing conflicts.

Simultaneously, the Leo Sun square adds another layer of complexity. Your shared ego might become excessively pronounced, potentially resulting in power struggles. It's essential to avoid falling into the trap of 'one-upmanship' or trying to seize dominion over each other. The Leo energy seeks recognition and admiration; make sure it's healthily received and equally reciprocated.

This period calls for a mutual reality check. Even though your tendency may be to express yourself forcefully due to the Mercury-Sagittarius influence, moderation and tact should be your guiding principles. Small disagreements can be minimized by patiently listening and thoughtfully responding.

Moreover, don't bypass light-hearted moments. Both Sagittarius and Leo share a vibrant, playful side which should not be shrouded by perceived tensions. This can form a bonding glue that allows you to navigate through tough discussions.

Interestingly, this transit also has a positive angle: it catalyzes growth. The Sagittarian quest for truth combined with Leo's courage may encourage you to delve into new intellectual territories together. Be it ideology, philosophy, or education, this is a great time to explore shared interests beyond your usual comfort zone.

Finally, remember to balance. As individual desires get magnified, the essence of your relationship should not get lost. Keep the focus on creating harmony between individuality and unity. Mercury in Sagittarius squaring the Sun in Leo transcends the 'I' versus 'We' paradox when handled maturely.

Register with 12andus to dive into your personalized birth charts, synastry, composite, and transit readings.