When Mercury in your chart forms an aspect to another person’s Mercury.
Mercury conjunct other person’s Mercury
The similarities in the manner in which you speak and think are striking. Both of your minds seem to be wired to approach problems and to handle mental tasks in similar ways. This fact can help you to understand each other, or, of course, it can get on your nerves from time to time. Much will depend on how comfortable you are with your own mental temperaments. Seeing eye-to-eye is a plus in most circumstances. Of course, differences in mental outlook can be stimulating, too. In a romantic relationship, this aspect suggests a positive “chemistry” whereby you don’t waste time on picking at each other for what was said, how it was said, and how it should have been said! You “get” each other, at least at the level of semantics.
Mercury sextile other person’s Mercury
Stimulating, interesting conversations are frequent. The ease of communication and your complementary interests make your conversations enjoyable and enlightening.
Mercury square other person’s Mercury
You approach problems and solve mental problems in very different ways, and this tends to be a source of friction in your relationship. For example, one of you may feel that the other depends too much on intuition rather than logic, or makes decisions too impulsively, or focuses too narrowly, etc. These differences tend to be very irritating to each other, so try to be very tolerant of each other. Sometimes you will simply not be able to work together on a problem; you will need to sometimes work independently of each other to “stay out of each other’s hair”.
Mercury trine other person’s Mercury
You solve problems and think about issues with a similar perspective and you are able to communicate clearly to each other. You enjoy talking to each other, sharing ideas, and learning from each other, and you are able to plan, design, and develop ideas jointly in a very successful manner.
Mercury opposition other person’s Mercury
You often hold opposite views on a subject and you often approach a problem in opposite ways. For example, one of you may be more methodical, logical, pragmatic, etc. while the other’s approach is diametrically opposite, being primarily philosophical, idealistic, and intuitive. Fortunately, however, these differences are not likely to lead to major conflicts, and often serve to complement each other. Only if either, or both, of you is very fixed and dogmatic in your thinking will this difference create serious problems.