In astrology, the Moon symbolises our emotional world. What do we need to feel emotionally safe?
It is the part of our identity that comes out when we feel most emotinoally safe to undress ourselves and show the world how we feel. In other words, it is who we are when we are with our families or closest people.
The Moon sign shows what makes us feel emotionally at-home. What kind of behavior and what kind of people, vibe, atmoshphere make us lower our guards and instantly feel connected.
Very often, a man's longest relationship is with a woman whose Sun sign (her public, visible self) is the same as his Moon sign. We tend to fall in love or be attracted to or feel safe with people who externalise (the Sun) our inner selves (the Moon). For such people we tend to say that they are our "other half" - the part of ourselves that we try to access and live out but ultimately it stays rather on the inside.
Many people struggle with feeling misunderstood. Struggle with communicating to the larger world who they are within. That happens when the Sun is not equipped (or equipped enough) to express the Moon. When the image you project to the world and the vibes you attract are very diferent from who you really feel yourself to be.
Ultimately the Moon sign is about who we really are deep within ourselves. Uur inner child, uncensored by the adult in us. When push comes to shove, we make the final decisions as per our Sun sign. But if we can let our hair down and be our unrestricted selves - we'd be much more like our Moon sign.