Mercury in 7th House synastry forms relationships on a basis of the mutual strong interest in researching and analyzing the nature of their relationship itself. Discussions and information exchange about all the facets of what’s going on between them will always be the subject matter of the partners’ conversations, as well as drawing comparisons and conclusions. It is the desire to solve all life problems that forms the strong basis for any further dynamic of the Mercury in Seventh House synastry relationship.
The negativity of Mercury’s aspects, or its own negativity in one of the natal charts, will provoke certain communication issues and lead to an ideological dissonance. If the synastry is positive, such difficulties do not arise while the partners establish an excellent, high-intellectual relationship. They become great business partners and companions who gladly spend time together, including such pursuits as travel to exotic destinations.
from F. Sakoyan, L. Ecker
Mercury in 7th House Synastry Explained
It is likely that speaking with you, your Mercury in 7th House synastry partner will feel some opposition to their thoughts and words, which may result in moments of inspiration: the mind is governed by Mercury which is partial to combats where it can show off and assets its power. For you, however, such conversations will seem painful, limiting your internal freedom and even humiliating even when the partner does not mean any of it. Consequently, your reaction to his or her words can be exaggerated, personal, and belligerent. Should there be combat, you’ll lose, at least internally, even when it looks different on the outside.
The karmic meaning of synastry Mercury in the 7th House
The karmic task for synastry Mercury in the 7th House is to learn how to listen to the outside world and, by doing so, learn to listen to yourself, which is much harder than people tend to think. And it is those parts of your partner’s speeches that caused you the most distress that will point out your major flaws. Once you’ve worked on your 7th House, it will be easy to communicate with your partner and you will understand him or her well. Consequently, the former war turns into negotiations that can be considerably more meaningful to your relationship than you could have imagined initially.
from A. Podvodny