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Sun Square Mercury Synastry: Relationships and Friendships Explained

Sun Square Mercury Synastry: Relationships and Friendships Explained

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The Sun square Mercury is a mildly negative aspect in synastry. It can cause minor problems with communication between two people.

The Sun is tricky when it comes to synastry. It gives vitality and energy, but it also represents a person’s ego and pride. Because of this, it is both important and sensitive when it comes to relationships.

Mercury is an important planet in synastry because it governs our communication style and ability, which can make or break a relationship.

Squares are generally considered difficult aspects between two people. They bring tension and conflict. On the other hand, they can also generate chemistry.

Sun Square Mercury in Synastry

The Sun square Mercury in synastry usually indicates that it is easy for two people to misunderstand each other, and that these misunderstandings can lead to conflict.

Yet, despite the misunderstandings, it also tends to cause people to persist in trying to be heard.

This means that, by itself, it is not fatal to the relationship.

It can aggravate other negative aspects, however, and it can lessen the influence of positive ones.

One characteristic of this aspect is that one or both of them will talk more than usual when they are with the other. Yet, this usually takes the form of nervous chatter rather than pleasant conversation.

There are certain sign combinations that will alter the meaning of this aspect somewhat.

Gemini and Virgo

If the aspect occurs between Gemini and Virgo, it becomes mildly positive rather than mildly negative. It does not matter if the Sun is in Gemini and Mercury is in Virgo or if the Sun is in Virgo and Mercury is in Gemini.

Mercury rules both Gemini and Virgo, so the person whose Mercury is involved will have strong communication skills. The person whose Sun is involved will be inclined to see the other favorably as well.

The two may disagree a lot, but it will strengthen the relationship rather than weaken it. They will both enjoy their verbal sparring matches.

Virgo and Sagittarius

If one person’s Sun is in Virgo and the other’s Mercury is in Sagittarius, this will also make this aspect positive rather than negative. The Sun enjoys Sagittarius and Mercury rules Virgo.

This will help them to enjoy their talks and the time that they spend together.

If one person’s Sun is in Sagittarius and the other’s Mercury is in Virgo, however, the aspect will become more negative.

The person whose Sun is in Sagittarius will be annoyed by the precise and critical nature of Mercury in Virgo, and will tend to tune the other out.

Gemini and Pisces

When one person’s Sun is in Gemini and the other’s Mercury is in Pisces, the aspect changes from slightly negative to neutral.

The two will still have misunderstandings, but the person whose Sun is in Gemini will enjoy being with the other. The Sun in Gemini will be patient with the sometimes disorganized manner of Mercury in Pisces.

When the Sun is in Pisces and Mercury is in Gemini, however, this aspect becomes more negative. The person whose Sun is involved will find the other frenetic and exhausting.

Sagittarius and Pisces

This aspect becomes more negative when it is between Sagittarius and Pisces. This is because Mercury has difficulties in both of these signs.

This will make misunderstandings more frequent and harder to resolve. The two will also be more likely to give up on communication than people who have this aspect in other signs.

This sign combination is worse when the Sun is in Sagittarius and Mercury is in Pisces.

When the Sun is in Pisces and Mercury is in Sagittarius, the person whose Mercury is involved will have better feelings about the relationship, which has a chance of bringing them together.

Other Synastry Aspects

The Sun and Mercury are never far apart from each other or from Venus in the birth chart of any individual. With the Sun square Mercury, it is likely that there will be other synastry aspects between these three planets.

To get a full picture of the strengths and weaknesses in the relationship, It is important to look at all of these aspects together.

House Position

You can determine more specific details with respect to how this aspect will operate and what areas of life it will impact by looking at the house position of the Sun and Mercury in each other’s charts.


Sun in Houses Synastry Meanings: 1st through 12th House

Mercury in Houses Synastry Meanings: 1st through 12th House

Man’s Sun Square Woman’s Mercury Relationship

This aspect can be difficult in a romantic relationship. The misunderstandings created by the Sun square Mercury are usually quite small, but they can add up over time if not dealt with.

It can be more complicated when it is a man’s Sun that is square a woman’s Mercury. This is because his ego will tempt him not to listen to her.

She, in turn, will be tempted to hold things in and not try to communicate at all. This can lead to a classic situation in which he is left guessing as to what she is upset about.

It will be important for both of them to work on their communication with each other. It will also be important for them to be willing to forgive each other and even learn to laugh about the misunderstandings they have.

Woman’s Sun Square Man’s Mercury Relationship

In some ways, this aspect is a little easier when it is the woman’s Sun and the man’s Mercury. Women tend to be a little more willing to work on relationship issues and to let go of their egos and pride.

This aspect can still be problematic, however. She will be tempted to dismiss what he is actually saying for what she thinks that he is saying. She will also be tempted to blame him for all of their disagreements and misunderstandings.

This could cause him to close off to her and stop talking about what is important to him.

As is the case as it is when the genders are reversed, the two will need to work on their communication. They will also need to forgive each other and develop a sense of humor.

Sun Square Mercury in Friendship

In some ways, this aspect is easier between friends than it is in a romantic situation. It is easier to avoid the inevitable disagreements and misunderstandings that this aspect can cause.

On the other hand, the two will be less likely to work through problems and more likely to give up. This could cause them to sever their friendship or to simply drift apart.

The thing is that if they can work through their misunderstandings, this friendship can be very good for both of them.

They will be able to see each other’s flaws and blind spots, which could help each of them to grow as people.

How to Tell if the Sun is Square Mercury in Synastry

The signs that are square to each other are of the same mode, Cardinal, Fixed, or Mutable but of incompatible elements.

This means that on the one hand, they are different, but on the other, they are too much alike. This is in large part what causes the difficulty between them.

If the Sun and Mercury are square by sign, some of the tension caused by this action will be present.

Below are the squares by mode:

Cardinal, Mutable and Fixed Squares by Zodiac Sign in Synastry

The aspect will be within orb (the acceptable margin of error) if the planets are within twelve degrees of a perfect square. The closer the square is to being exact, the more powerful it will be.

If the planets are within twelve degrees of a square with each other from the wrong signs, technically, the aspect will be present in a weakened form.

On the other hand, the planets will be in a harmonious aspect, either a sextile or a trine, by sign. The positive whole sign aspect and the negative cross-sign aspect will tend to both operate, creating a complex combination of conflict and harmony.

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In synastry, the Sun square Mercury can cause minor conflicts and misunderstandings. The two will be able to work through these conflicts and misunderstandings if they decide to, however.

This aspect will tend to make the other negative aspects between the two worse and neutralize some of the influence of the positive aspects.