Saturn in 3rd House synastry unites people who share a drive for serious intellectual self-improvement and actively engage in joint business and professional life activities allow them to achieve their long-term goals.
Saturn in 3rd House synastry partners are responsible and honest with each other, as well as true to what they are doing. The “Saturnine” personality directs the intellectual abilities of the Third House personality in the right direction, instilling in it a sense of responsibility towards others. That, in turn, helps the “Saturnine” personality in terms of enriching its ideas and practical skills.
If Saturn is afflicted, the partner who it belongs to is reluctant to open up to new ideas of the personality of the Third House, who will consider its counterpart stubborn and unresponsive.
from F. Sakoyan, L. Ecker
Saturn in 3rd House Synastry Explained
Saturn in 3rd House synastry is a difficult aspect for partnership, and it must be worked on extensively before any positive results can come. The position of the synastric Saturn in your natal chart shows where and how your partner will tend to oppress and restrict you; the evolutionary level of their Saturn will show how precisely they will do it, and to what extent it will be fair.
Under Saturn in 3rd House synastry, the partners will limit your social activity, requiring you to observe strict social ethics, and it is crucial for you to understand the extent to which their demands and reproaches are true. If you do this analysis and draw proper conclusions, both your social views and relationships with people will deepen.
If you don’t, your relationship with a Saturn in Third House synastry partner may deteriorate to a situation between the high-school principal and a problem sophomore who stands before her full of fear, listens and agrees to everything she has to say while castigating him for disgracing himself again, and instantly forgets about all he promised once he leaves the principal’s office.
On the other hand, your social behavior and especially your views on people as a whole will provoke a Saturn in 3rd House synastry partner to make harsh judgments and cruel one-sided assessments. What he or she needs to understand is that cruelty will not get them anywhere, and the best course of action will be to demonstrate wisdom and understand the problems of your social adaptation and integration.
This synastric aspect will be especially painful for your partners if their Saturn is afflicted while your Third House is harmonious: then your behavior will deeply hurt them, and you will pay almost no attention to reproaches, much to his horror and perplexity… although sometimes the relationship would be worth it still.
from A. Podvodny