As Mercury transits in Sagittarius and squares your composite Uranus in Leo, expect a surge of unexpected shifts in your shared communicative patterns. Mercury's influence inherently stokes fiery debates and intellectual exploration, while Sagittarius' expansive and freedom-seeking nature adds fuel to this flame. This transit is likely to propel you towards existential and philosophical dialogues which, if handled thoughtfully, can forge stronger bonds between you.

However, Uranus in Leo in the composite chart indicates a tendency for stubborn egos to disrupt your harmony. Known for its rebellious spirit, Uranus could trigger sudden changes and resistance within your relationship. In Leo, which signifies pride and central attention, such disruptions may involve ego clashes and dominance issues. Therefore, ensure your intellectual dialogues don't morph into verbal clashes or power plays during this period.

Moreover, the square aspect, suggestive of friction and tension, reinforces the challenges. This is likely to add a sense of urgency or stress as you encounter these elements of unpredictability. Despite the potential tension, it can lead to a breakthrough in your dynamics, birthing new, healthier communication structures.

This cosmic alignment necessitates for you to actively work towards diffusing tension, nurturing tolerance, and promoting open-mindedness within your relationship. Harness Sagittarius' wisdom to embrace change instead of resisting it; let the Uranus energy disrupt patterns that have become too rigid.

Transits are temporary, but they leave an indelible impact. Let this unique encounter with the cosmos be a catalyst for growth and transformation within your relationship. Remember, growth often demands discomfort and the shedding of previous forms, a phenomenon very much echoed by the square aspect. Ride the waves of change with grace, keep the channels of communication open, ensuring that respect and understanding govern your reactions. Embrace the upheaval and let it redefine your relationship. Survival and evolution go hand in hand, as is in life, so in astrology.

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