Author: Alison Price – Updated: January 2026

💚 Relationships, Love and Romance Astrology

This article is part of my Relationships, Love and Romance series, where I explore compatability, the Part of Marriage, synastry, composite midpoints charts, Davison Relationship charts and wedding elections.

How to Analyze Romantic Charts Like a Pro

Romance Charts

Potential

In astrology, the art of analyzing two charts for love potential has many approaches. No one method is better than another they complement each other.

Using multiple techniques to interpret two charts for romantic compatibility is the best way to get a deeper understanding of the relationship.

Techniques

There is basic synastry, chart shape, Venus and Mars, the Vertex, male and female planets, chart comparison, combination charts and more.

Synastry Introduction 

Synastry Definition

Synastry is the branch of astrology that looks at how two people relate to one another.

It works by comparing the two birth charts to see how one person’s planets interact with the other person’s planets and chart structure. These connections describe how energy flows between two individuals. They show where there is ease, attraction, understanding, tension and growth.

Synastry does not tell you whether a relationship will succeed or fail, but rather it helps you understand the nature of the connection. It highlights why two people are drawn together what they awaken in each other and how they experience closeness conflict and commitment.

Synastry can be used for romantic relationships, friendships, family bonds and working partnerships. At its best synastry offers insight compassion and awareness rather than judgement.

Synastry is Deeper than Sun Sign Compatibility 

Synastry begins where magazine or Sun sign compatibility ends.

It is not about whether Taurus and Leo get along at dinner.

It is about how two whole people meet each other in the middle through time, habit, desire and vulnerability.

When we compare two charts, we are not matching types, but rather we are watching two inner worlds lean toward each other or pull away in very specific ways.

What Synastry Can and Cannot Tell You

Synastry can show attraction patterns emotional ease friction points and long-term themes.

It cannot tell you if someone will text you back or if love will conquer all.

In general, astrology describes the overarch not the choices. What you do with the information still matters.

Working with Two Charts

Partners

You may wish to work with a copy of two charts, your natal chart and that of another person whom you have chosen.

It could be your girlfriend, boyfriend, husband, partner or friend etc. Relationship astrology offers a few main techniques for interpreting the interaction between two people.

Types of Relationships

As an astrologer you will be asked the relationship questions like, “Is he the one?” “When will I marry?” and “Where has the love gone?” etc.

Astrologers generally focus on the typical relationship between a man and a woman.

Obviously, there are many correlations between other types of relationships such as same-sex romance, parent and child, siblings and parents (family) or two friends.

Several of the analysis techniques here can be used to interpret different types of relationships.

Permission

Before using another person’s birth chart for your comparison please make sure you have their written permission to do so.

Types of Relationships

Business Relationships

Saturn is the dominant planet for any business relationships.

Mercury is the planet for and buying or selling or for commercial relationships.

Teacher and Student Relationships

Look to Mercury for the student relationship and thinking, writing and information gathering.

Jupiter is the sage, the teacher and the knowledge base. This planet features in any teacher-student relationship.

Saturn again is the authority in a relationship.

Chiron relates to a mentor and protégé́ relationship where one person learns from another. This can also suggest an apprentice role to the master journeyman typically Jupiter or Saturn.

Family Relationships

The Moon by its aspects and house is related to all family relationships.

Planets in Cancer are concerned with family interactions.

For family matters also consider Jupiter which is exalted in Cancer.

The planet that rules the 4th house will represent family matters as well.

Romantic Relationships

Venus is the planet that rules love, attraction and romance.

Mars is the planet that rules the chase, libido and sex.459

The Sun indicates oneself in the matter and is the heart of the matter.

The Moon suggests the natural instincts and feelings towards someone.

The 5th house ruler, that is the planet that rules the sign on the 5th house cusp, and the 5th house tenants (planets in the 5th house) pertains to all love affairs.

The Vertex, when engaged relates to all pivotal relationships in life.

Marriage

The marriage planets are the same ones as for romance, but now we include Saturn for serious and enduring relationships. Saturn rules things you do for the long haul, like marriage.

The 7th house ruler, that is the planet that rules the sign on the 7th house cusp, and any 7th house tenants (planets in the 7th house) pertain to all prenatal contracts and legal marriage contracts.

Marriage itself resides in the 7th house.

Multiple planets here suggest multiple marriages or long-term serious relationships like common law partners.

The Natal Promise for Romance

Everything comes from the Natal Chart

Only what is promised in the natal chart can come to pass for each person. A planet is only as good as its natal promise.

You can determine which planets are strong or weak by the planetary complex.

Strong Natal Planet

A strong natal planet will remain a strong planet in the synastry and comparison charts.

Weak Natal Planet

A weak natal planet will remain a weak planet in the synastry and comparison charts.

Polarity, Element and Mode Count

Sign Components

Each sign can be broken down into three components, polarity, element and mode.

Counting

Quality vs quantity counting in planets means to only count the seven visible planets which are the Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn.

Polarity Blends

When considering polarity blends, in general, the active signs of fire and air blend well and passive signs of water and earth people blend well.

Polarity Lack

When a person’s natal chart lacks an element, that weak element will likely be sought, in the partner.

In a chart with no fire that person will seek a partner with fire.

In a chart with no air that person will seek a partner with air.

In a chart with no earth that person will seek a partner with earth.

In a chart with no water that person will seek a partner with water.

The Four Elements

Considering the dominant element in each natal chart we can say that charts in the same polarity have basic complimentary features.

More on Sign Components for Relationships

Consider the Individual

Always consider the individuals for whom you are doing the reading.

Their age and life experience is important.

Their education and or intelligence may be a factor in how they receive your interpretations.

Their social background can also play a part.

Their spiritual outlook, soul path and personal evolution towards New Age practices will also be significant.

Often the person requesting the astrology reading is tuned into New Age practices, but not necessarily their partner where you may find some resistance.

Basic Techniques of Synastry

Chart Comparison

Chart comparisons are performed by placing the planets and points from one person’s natal chart into the natal chart of the other person and vice versa.

Usually, the natal chart of the first person, placed in the inner position in the bi-wheel, holds the angles and house cusps and the outer ring shows the second person’s planets and points.

An person’s natal planets placed in your chart shows how they influence you.

Your natal planets placed in another person’s natal chart will show how you influence them.

The house placements and aspects energized by one person’s planets to another person’s chart is the basis of the chart comparison.

Working with a Pair of Charts

Defaults

When working with a pair of charts, as you do in chart comparison, it is essential that the charts are both calculated on the same astrological defaults. Do not mix them up.

The defaults I use are:

The same house system. I use Placidus house cusps
The same zodiac. Here you need to be on the tropical
The same lunar node calculation I use the mean node here and not the tree node.
The same Part of Fortune I use different day and night.

It doesn’t matter if you use another house system or zodiac to me, but just that both of the charts that you are comparing are based on the same calculations.

Author Bio

Alison Price: Professional Astrologer

Alison helps you uncover your individual creativity and lead a fulfilling life using your own astrology. She shares her wisdom from the heart with a touch of humor. She offers Consultations for everyone and Coaching for Aspiring Astrologers.

If you’d like to get in touch with Alison, you can reach out to her via email at starzology@gmail.com.

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