The 8th House is a deep, dark place. It’s one of the most sensitive areas in your chart, representing sexual and emotional intimacy. But it’s also where you hide your compulsions and obsessions. It’s the house of instinct, endings, and the rebirth that follows those endings. The 8th House is where you do not have complete control, so when someone’s planets fall in this area, it can be an intense experience.
Loss of control is an important theme with this house; the person that activates it will confront you with this issue. That’s a frightening concept, but it’s an essential component of 8th House synastry overlays. The purpose of an 8th House connection is to teach you to deal with buried issues that you may not want to confront. You may be intensely attracted to, or repelled by, this person. Maybe you’ll feel a combination of both. Much will depend on how you handle your 8th House; the sign on the cusp and the condition of its planetary ruler will tell you more.
Before we look at examples, I should clarify that the 8th House person will experience the greatest intensity with this connection. The planet person will probably be aware that they have a deep impact on the house person. But how they feel about this will depend on which of their houses are impacted by the 8th House person’s planets. I’ll be writing an article on this (the potential differences between two synastry house overlays) at a later date.