Venus and Mars

If Sun–Moon contacts are the foundation of a bond, Venus and Mars are its chemistry. Venus is how you love and what you find beautiful; Mars is what you desire and how you pursue it. Between two charts, Venus–Mars contacts are the signature of attraction — the pull, the spark, the wanting.

A relationship can have deep Sun–Moon bonding and no Venus–Mars chemistry (the beloved friend you're not attracted to) or fierce Venus–Mars chemistry and no Sun–Moon foundation (the magnetic affair that can't become a home). The best romantic bonds have both.

Venus and Mars are the classical pair of desire — the lover and the warrior, attraction and pursuit, the feminine and masculine principles of Eros in the old symbolic language (in either person, regardless of gender). The tradition read their contact between charts as the mark of physical and romantic attraction, distinct from the soul-bond of the luminaries.

Their myth is instructive: Venus and Mars were lovers, and their union was considered both irresistible and destabilising. That is the nature of the contact — it generates heat, and heat is generative and disruptive at once.

Venus conjunct Mars (between charts) — strong mutual attraction. The Venus person's way of loving directly ignites the Mars person's desire. Classic chemistry.

Venus trine or sextile Mars — easy, flowing attraction that sustains over time. Less explosive than the conjunction or square, more durable.

Venus square or opposition Mars — intense, charged attraction with friction built in. This is the "can't keep our hands off each other and also drive each other crazy" signature. The tension is the heat; these contacts generate as much pull as trines, sometimes more, but with conflict woven through.

Read both directions and note the roles. A's Venus to B's Mars is a different current than B's Venus to A's Mars. When it runs both ways — mutual Venus–Mars contacts — the attraction is reciprocal and self-sustaining. One-directional, and one person tends to pursue while the other is pursued.

Venus–Venus contacts show how compatible two people's tastes and values and styles of affection are — whether they love in the same language. Mars–Mars shows whether their drives and tempers work together or clash — important for how a couple fights and how they act in the world side by side.

Chemistry is not compatibility. Venus–Mars tells you about attraction, not about whether a relationship will work or last. That is the whole chart's job. A relationship built on Venus–Mars alone burns bright and often burns out; read the chemistry as one layer, not the verdict.

In your two charts, find the Venus–Mars contacts both directions, plus Venus–Venus and Mars–Mars.

Ask: is there attraction chemistry here (Venus–Mars), and does it run one way or both? Do you love in the same language (Venus–Venus)? Do your drives cooperate or clash (Mars–Mars)?

Then locate this layer within the whole: is the chemistry supported by Sun–Moon foundation and Saturn commitment, or is it chemistry alone? That tells you whether you're looking at a bond that can become a life, or a fire that will want more than it can sustain.

Consider a Venus square Mars between two charts, tight — the chemistry-with-friction signature — in a relationship that otherwise has little Sun–Moon foundation.

The pull is undeniable: the two are drawn together with real force, and the square makes it electric rather than comfortable. But without the luminary bonding underneath, there's heat without home — the attraction that keeps reigniting even when the two people know, and may even say aloud, that they don't quite fit. It's the affair you can't quit, the ex you keep returning to, the person whose pull survives every good reason to stay away.

Synastry names this precisely and without judgment: strong Venus–Mars, weak Sun–Moon, is a relationship that runs on desire and lacks the foundation desire needs to become sustainable. Knowing that doesn't dissolve the pull — but it tells you what you're standing in, which is the beginning of choosing what to do with it rather than only being moved by it.

• John Townley, The Composite Chart and Arroyo's Relationships and Life Cycles — the attraction dynamics.
• Read alongside: Venus and Mars in Foundations.