The plainest word for it is permeable
The plainest word for how you meet people is permeable. Saturn in Pisces in the 1st house means the version of you that arrives takes on something of whatever is already in the room, and you have been managing that fact rather than choosing it.
The 1st house is the self other people encounter; Pisces has no fixed outline. Saturn requires that something hold, so what you have built is a deliberate structure over a naturally undefined presence — a manner, a set of habits, an outline maintained by effort rather than issued as standard.
Everybody sees something different in you
Ask three people who know you to describe you and the accounts will not obviously be of the same person, because each of them is partly describing what you became in their company. It is not a performance and it is not dishonesty. It does mean the question of what you are actually like has fewer external witnesses than most people have.
The weight is arriving without an edge
Walking into a room with no natural boundary means the room comes in: the mood, the tension, whatever is unresolved between the people already there. It arrives before you have any information about it and you frequently mistake it for your own. That is the single most useful thing to know about how you operate.
It comes due when you have to be definite
The test is a situation requiring an unmistakable position: a refusal, a preference stated in company, a boundary that has to be visible. Your instinct produces something accommodating and slightly ambiguous. The plain version exists and it costs one uncomfortable moment, and the ambiguity has already cost a great deal more than that.
A presence people find restful
What this builds is genuinely valuable: people relax around you, say more than they meant to, and leave feeling better without being able to identify what happened. That is a real capacity and it operates whether or not you are attending to it. The whole task here is keeping enough of an outline that it does not empty you out.
People tell you things within about ten minutes
Strangers disclose to you at a rate that other people find implausible — the real situation, the thing they have not said elsewhere, delivered in a queue or on a train. It happens because you present no resistance. It is a gift and it means you carry a good deal of other people's material with no arrangement for putting any of it down.
You come home carrying whatever the day contained
Atmospheres attach to you physically and travel: a tense meeting, a difficult person, somebody else's bad week arriving in your body as tiredness with no cause you can name. Something that marks the end of the day — a shower, a walk, changing clothes deliberately — works considerably better than rest, because what is needed is a boundary rather than sleep.
You adapt to the organisation faster than is good for you
Within a few months of joining anywhere you have absorbed the culture, the assumptions and the way things are done, which makes you effective quickly and removes the outside view you arrived with. Write down what you noticed in the first fortnight. That document is worth a great deal and it has an expiry date measured in weeks.
You have no accurate picture of how you come across
Because you take on something of every room, you have never had a stable reading of your own effect on people, which means interest gets missed entirely and indifference gets over-interpreted. Other people have a rough sense of their own appeal; you have almost none. Asking two friends to describe what you are like to be around is unglamorous research and it fills a genuine gap.
You absorbed the household's mood as a child
You knew how everybody at home was feeling before anybody said anything, and you adjusted accordingly, and none of that was noticed or acknowledged. It made you perceptive and it installed a habit of managing other people's states that has never been switched off. Recognising it as a job you were doing is the beginning of being able to stop.