You do not really begin until somebody is opposite you
Mars in Libra in the 7th house says the same thing twice: the sign works through other people and the house is where other people sit. So your drive activates in company and idles alone, and almost everything you have achieved had a second person somewhere in it.
Older texts read Mars in detriment in this sign, and schools weigh that differently. This site takes it as a description of method rather than a defect. What is missing is the ability to charge at something unaccompanied. What is present instead is a force that can only be started by another person and is, once started, unusually hard to exhaust.
Starting a fight is the skill you never acquired
You can hold a position, argue it well and stay in a conflict for as long as required. What you cannot easily do is open one. So difficulties wait until the other person raises them, or until the threshold trips and something considerably sharper than intended arrives. Learn the opening sentence rather than the argument. Everything after it you already handle.
The partner becomes the ignition
Projects, ambitions and changes in your life have a person attached to them, and the person is not incidental. That is a genuinely efficient arrangement and it makes the end of a relationship expensive in a way other people do not experience, because several unrelated things stop at the same time. Keep one pursuit that is entirely yours as a matter of insurance.
Fairness enforced in both directions except one
You will insist a partner is treated well by their family, their employer and their friends, and you will accept an arrangement between the two of you that nobody would call even. The instinct works perfectly and simply does not point at you. Ask what you would say if a friend described your arrangement. The answer is usually immediate.
Alone is a condition, not a preference
Extended periods without a close partner are genuinely harder for you than for most, and the honest version of that is worth admitting rather than performing independence. It also means a poor relationship can outlast its usefulness on the strength of not being alone. Build a solitary life that works reasonably well, deliberately, so that staying is always a choice.
Raise it on the day, in one sentence
Almost every difficulty in your relationships comes from timing rather than content: the thing that would have been small on Tuesday gets raised in month four with a fortnight of accumulated evidence behind it. Set a rule you can actually keep. Anything still bothering you the next morning gets said that evening, briefly, before it acquires any supporting material.
Introduced as half of something
A large part of your social world knows you as one of a pair, and the invitations, the plans and the conversations arrive addressed to both of you. That is pleasant and it obscures how few of those people would ring you on your own. Keep three friendships that predate any partner and see those people separately, on a schedule if it does not happen naturally.
Two families and no declared allegiance
You handle the relationship between a partner and your own relatives by being fair to everybody, which reads to each side as not being on theirs. Fairness is not what is wanted in that particular room. Say plainly to your partner, once, that you are on their side, and then be visibly on it in front of your family at least once.
Learning to want something in your own name
Your ambitions have historically been shared, and the version of them that belongs only to you has rarely been stated. That is not a deficiency of character, it is how this configuration produces motion. The practice is naming one thing a year that has nobody else in it, and doing it whether or not anybody is watching. Expect the doing to feel oddly unimportant.
Terms agreed while everybody is fond
You enter joint financial arrangements readily and negotiate the details badly, because negotiating with somebody you like feels like an accusation. Handle it as paperwork rather than as a discussion: a standard set of terms, written at the start, treated as the normal way these things are done. Your discomfort is entirely with the conversation, not with the substance.