Planet
The Moon
The Moon is the part of a chart that deals in safety rather than in wanting. Where love is concerned the tradition gives it emotional safety and the sense of what feels like home, and that is a separate question from what attracts you. A chart can answer the two in ways that do not agree.
The tradition places it at home in Cancer, exalted in Taurus, in detriment in Capricorn, in fall in Scorpio.
What it is doing in a chart
The Moon is one of the two lights, counted alongside the Sun rather than among the planets. That grouping carries most of its character. If the Sun is what a person is becoming, the Moon is what they come back to when nothing is being performed.
It rules one sign only. In Cancer it needs belonging and a soft place to retreat into; in Taurus, where it is exalted, it needs calm, comfort and the familiar in order to feel safe. Both of those describe conditions under which a person is able to rest, which is the question this body is always asking.
The two placements the tradition counts against it point the same way. In Capricorn the Moon needs to feel capable and in control before it can rest; in Scorpio it feels everything at full volume. Neither is a verdict on a person. Read plainly they describe a faculty working in conditions that do not suit it, and that tends to show as feeling arriving late, or arriving all at once.
The Moon in a love reading
Love is not read from one place. The tradition reads it from Venus, the Moon and Mars, and from the fifth, seventh and eighth houses. Venus is attraction and value, Mars is desire and pursuit, and the Moon holds the middle of the three.
Put another way: Venus says what registers as lovely, Mars says what is worth moving toward, and the Moon says what a person needs in order to stay. A relationship can satisfy two of those and fail on the third, and which one is failing is often the hardest thing for the people inside it to name.
Attraction and pursuit are legible from the outside. What someone needs in order to feel safe mostly is not, which is why this part of a chart tends to be the last thing two people work out about each other.
What changes the reading
A body is read three ways at once: the sign it occupies, the house it falls in, and what else in the chart is touching it. The dignities above are only the first of those. They say how well the Moon is placed, not what it is placed among.
The Moon is the fastest-moving body in a chart, so its sign turns over every two or three days while its house moves through the whole wheel in a single day. The house is therefore the part that leans hardest on an accurate time of birth, and it is worth knowing which of the two an unfamiliar reading is actually built on.
The fourth house is the neighbouring territory — family of origin, lineage, the floor under your feet — and a Moon that falls there doubles the theme rather than adding a new one. Contacts move it furthest of all. Two charts with the Moon in the same sign can describe people who would not recognise each other, and the difference is almost always something else pulling at it.