Excerpt from my latest Sasstrology article (please leave comments on the Sasstrology site):
"Synastry overlays to your 1st House create an immediate reaction. If someone’s planets fall in this house, they are standing at your front door, insisting that you let them in. Or, they might insist on remodelling your front door. Maybe they leave flowers, treating it like a shrine.Their energy impacts your external identity and social mask. They actually have a say in what defines your public persona. How you respond depends on what’s happening with your 1st House, and which of their planets are involved. You may welcome the planet person into your life, or you may treat them as an unwelcome intruder who challenges your identity. These overlays do not guarantee romantic attraction, but for this article we’ll assume that an attraction already exists."