How these two meet
Virgo raises the thing and Libra feels the temperature drop. Libra keeps the thing back and Virgo, who can always tell, experiences being managed by someone who has decided they cannot handle honesty.
Mercury wants it right and Venus wants it pleasant, and most evenings those are the same wish arriving in two different tones. The whole distance is between getting it right and getting it right with somebody.
What you do when something is wrong is where it separates. Mercury states it, accurately and promptly, because an unstated problem is an unsolved one. Venus weighs whether stating it will cost more than the problem does.
Neither of you is reading the other correctly. Virgo is not being harsh and Libra is not being evasive: you are each protecting a different thing, and both things are worth protecting. What holds it together is that Libra keeps Virgo from disappearing into the task, and Virgo hands Libra something rare, which is a person who will simply handle the practical rather than negotiate about it.
For Virgo, the work is saying the correction with the relationship in it. Not softer. Warmer. Same content, plus one sentence making clear the person is not the problem.
For Libra, the work is raising one thing in the first week rather than the sixth month. The cost you are calculating is real, and it compounds while you are calculating it.
The question
Which costs more here, the saying or the not saying?
One conscious action
one correction, one complaint
Virgo makes one correction and puts a warm sentence around it on purpose. Libra raises one thing they have been holding, in its first, uncalculated form.
It is small on purpose. It is also each of you doing the thing the other one finds easy.
Mercury fixes the thing and Venus protects the two of you. Neither has ever thought the other was being careless.
You have been solving the same problem from two ends, and mostly arriving.