Their Sun in your 1st house
They make you stand a bit taller
In synastry, you place one person's planets into the other person's houses. When someone's Sun, who you are, falls in your 1st house, Self, that part of them shows up in the part of your life about identity, body, how you come across.
What it's like
Walk into a party together and people look at the pair of you, then at you a little longer than usual. This person has a way of making you feel seen before you've said a word.
The good
Their warmth helps you feel visible
The tension
You may borrow their confidence instead of finding yours