You would rather understand it than feel it
An Aquarius Venus running the 8th house gives you an analytical route into the deepest material. Jealousy, grief, need and the rest arrive and are immediately examined, named and set at a workable distance, and the examining is genuine rather than evasive.
It is also a way of not being in the middle of anything. The closeness you want requires being inside the feeling rather than beside it, and that is the one manoeuvre your instincts do not supply. It has to be done on purpose.
Possessiveness is genuinely alien to you
The idea that a person could belong to somebody strikes you as absurd, and you extend that principle in both directions with unusual consistency. Partners find it either liberating or bewildering. Say it plainly early, since somebody expecting ordinary jealousy will read its complete absence as evidence that you do not care.
Shared arrangements on your own terms
Joint money, obligations and the practical machinery of a merged life are all things you would rather design than inherit: unusual splits, separate reserves, agreements that suit the two people rather than the convention. That works well. Write it down anyway, since an unconventional arrangement is exactly the kind that nobody can reconstruct later.
Crisis brings out your competence
When something serious happens you become calm, clear and extremely useful, because the situation gives your detachment somewhere legitimate to be. People rely on you in exactly these moments. Notice what happens afterwards, though, since the feeling you postponed during the emergency does not cancel itself and tends to arrive weeks later without a label.
The change you make rather than suffer
You are willing to dismantle an arrangement that has stopped working, sometimes to an extent that alarms everybody around you, and you do it without much visible distress. That capacity is real. Check whether the thing is actually finished before demolishing it, since a taste for reinvention does not always wait for a reason.
Stop explaining and stay in the room
Your instinct in an emotional moment is to describe what is happening, accurately, which puts you at one remove from it. Try once saying nothing analytical at all and simply remaining present. It is far more uncomfortable than the commentary and it is the thing the other person has been waiting years to receive.
Feeling it rather than accounting for it
You can give an excellent account of your own psychology and it is not the same as having lived through anything. The material that changes people has to be experienced rather than described. Notice when you have converted something painful into an interesting observation, since that conversion is quick, automatic and where a good deal gets lost.
The one who says the arrangement is unfair
Within a family you notice the inherited inequities that everybody else treats as natural: who was favoured, who is expected to give up what. Saying it makes gatherings difficult and it is frequently the only thing that changes anything. Choose the moment rather than the sentence, since the sentence is usually right.
Suppressed feeling has a physical account
What you convert into analysis instead of experiencing does not disperse; it settles as tension, disturbed sleep and a fatigue with no obvious source. Talking about it more will not help, since talking is the mechanism. Something physical and demanding is the alternative route, and it works without requiring any insight at all.
Two people know what is actually going on
Your wide, friendly circle receives an edited and cheerful version, and one or two people get the truth. That concentration is efficient and slightly precarious. Widen it by one over the next few years, since the small group here tends to shrink through ordinary attrition and has no mechanism for replacement.