One person gets everything
Scorpio Sun, 7th house: your identity forms in a single close relationship rather than across many. Whoever holds that position gets a depth of attention almost nobody else in your life receives, and there is no diluted version available. You need one bond you can commit to completely.
It makes you a formidable partner and it concentrates the risk. When that relationship is in trouble, everything else in your life is affected in a way that other people find disproportionate and you find obvious.
The tests they were never told about
You assess loyalty continuously and privately: the small inconsistency noted, the promise checked, the reaction observed. None of it is announced, so the other person is being examined without knowing the criteria. That is unfair and it is also how you build trust. Say what would actually reassure you, out loud, and let them pass on purpose.
Loyalty without a limit, until there is one
What you offer is close to unconditional while it lasts: you defend them, you stay through what would end most relationships, you do not discuss them elsewhere. And when a line is crossed, the door closes completely and rarely reopens. Both halves are real. Tell people where the line is rather than letting them discover it by crossing it.
Jealousy is information, not a verdict
The territorial reaction here is strong and it arrives before any evidence. Treated as fact it corrodes the relationship; treated as data it is often accurate about something, though rarely about what it claims. Ask what the feeling is actually tracking. Frequently it is distance rather than a rival, and distance is a solvable problem.
Choose somebody who can hold the weight
What you bring is heavy in the best sense, and not everybody has the capacity for it. Pick people who do not flinch: who can be told the truth, who can withstand your bad month, who will say no to you without leaving. Everybody else will feel like a compromise within two years, and they will feel it too.
Total, and slow to arrive
You take a long time to commit and then you are entirely committed, and the interval in between is difficult for the other person to interpret. Tell them where you are in the process. Somebody who knows they are being taken seriously will wait; somebody who thinks they are being kept at arm's length will not.
You will find out what they are actually like
In any professional pairing you form an accurate read of the other person within months, including the parts they conceal from clients and colleagues. That is useful and it is uncomfortable to sit on. Say the one thing that affects the work and keep the rest, since a partner who feels examined behaves worse rather than better, and you will need them functioning for years.
Not many, and none of them casual
Your circle is small by design and each person in it has been genuinely chosen. That is a coherent way to live and it leaves you exposed when one of them moves or dies. Add somebody every few years even though the early stage feels like work, because replacements cannot be found in a hurry.
The in-laws are a real negotiation
You do not take on a partner's family lightly, and you will notice quickly who is trustworthy and who is not. Keep those conclusions to yourself for the first few years. Judgements delivered early become the thing your partner has to defend, and you are usually right in a way that does not help.
Not everything has to be that close
You have one setting for relationships and it is deep, which means acquaintances feel pointless and the middle distance goes unused. Some perfectly good relationships live there. Practise keeping somebody at a friendly middle range on purpose, for a year, without deciding that they are either significant or nothing. The middle distance turns out to be where most of ordinary life happens.