The part of you that wants to be recognized
Your Sun is your sense of direction: what you’re building, what you’d be embarrassed to give up on, the version of yourself you’re aiming at. It moves about a degree a day and stays in a sign for roughly a month, which is why it’s the one placement nearly everyone can name.
Between two people, the Sun asks a simple question: do you see who I’m trying to be? The partner who asks about the novel you keep abandoning is touching your Sun. So is the one who thinks the novel is a phase.
When someone’s chart touches yours here
A contact from their Moon tends to bring comfort: they relax around your plans and you feel steadier for having them there. See Sun conjunct Moon for one version. Their Venus tends to bring plain admiration, and their Mars brings a push, which can feel like encouragement one week and competition the next. Their Saturn can feel like being taken seriously or being graded, sometimes both in one dinner.
Sun contacts often work in one direction more than the other. One of you may feel lit up while the other feels a bit like the audience, so it’s worth asking whether the attention runs both ways.
Questions worth asking
When something goes well for you, is this the first person you want to tell, and how do they react? When something goes well for them, how do you react? Pride in each other’s lives is a small daily thing, and a chart can only point you toward it.
For the sign itself, the Sun signs in love pages are a good next stop.