When communicating with a partner under Pluto in 1st House synastry, you can feel some kind of hidden threat emanate from them in your direction, which is more acute to you than they think. If hard, fateful events begin to happen in your partner’s life, it is likely that you’ll feel guilty, even if you had nothing to do with those events directly. They will oppress you strongly and grimly; but if your partner thinks that your gloom is deep they are wrong: it often disappears as soon as you two part.
Pluto in 1st House synastry can lead to very difficult family relationships, especially if Pluto is active in one of the spouses natal chart: for example, if the wife works with large numbers of people as a TV presenter, or the husband’s profession is related to atomic physics, war, secrecy, etc. Under this aspect, you must learn to humbly bear the stings you get from your partner, as well as the moments of oppression and suppression. A plutonic cleaning is rarely painless, but if it begins it means that you need it, and the fruits of your humility will affect you in very serious matters: most importantly, you will find it much easier to simply live every day.
However, Pluto in 1st House synastry puts a much greater responsibility on your partner who may not understand for a while that, karmically, you were sent to see and probe for his or her evolutionary imperfections, defects and straight failures. The good news is that, taking this into account, your partner can get rid of all that garbage. However, it may seem to them that the situation is the opposite, and they have to clean up your evolutionary flaws, and you resist, and your resistance causes him or her a lot of trouble.
from A. Podvodny
Pluto in 1st House Synastry Explanation
Under Pluto in 1st House synastry, relationships are formed based on the very strong influence of the “Plutonian” personality on the subconscious and self-expression of the personality of the “First House”.
With harmonious Pluto, the partner of the “First House” begins to rely more on all issues: not on emotions, thoughts and feelings, but on the principles emanating from his subconscious. The influence of the “Plutonian” personality is expressed in the fact that the personality of the “1st House” begins to feel like a spiritual nature capable of full self-control. As a result, their relationship becomes constructive.
With the negativeness of Pluto, the personality of the “First House” strongly protests against attempts to influence its personal qualities by the “Plutonic” personality. If the relationship between the partners is positive, their life interests intersect in such areas as science, spirituality, esoterics and the occult, technology, politics, economics, sociology and ecology.