A conversation is going fine. Two days in, easy back and forth, an evening starting to look likely. Then she asks something nobody but you can answer.

Why did you leave London. What happened with your last relationship. Do you actually want kids, or are you saying that. Are you close with your family.

This is the moment that separates a service from an inbox being emptied, and the rule that governs it is short.

Section 01

The rule is that the question comes to you

When something personal, specific or true about your life is asked, nobody guesses. It gets brought to you, you answer in a line or two, and your answer is what goes back to her.

Not a version of your answer. Not a smoothed one. Yours, in the shape you gave it.

That is the whole rule, and every other thing worth saying about this arrangement follows from it.

Section 02

Why guessing is expensive rather than clever

Imagine the alternative for a second. Somebody writes something warm and plausible about why you moved cities. It is well judged. She likes it. Thursday gets booked.

Then on Thursday she refers to it, and you do not know what she is talking about.

You can survive one of those. You cannot survive a conversation built from four of them, and you will not even know which four. The evening has an odd quality you cannot name, where she keeps referring to a man who is nearly you. Women notice that faster than men expect, and what they conclude is not that a team wrote the messages. It is that you were performing.

So the guessing does not save you time. It spends the date you were buying.

Section 03

What actually gets asked, and how it feels

In practice the asking is small and dull, which is the point.

A short question lands. Her question, plus what is worth knowing to answer it. You send two lines back. It goes out in your voice.

You are not writing the message. You are supplying the one fact nobody else has. That is a different job and it takes a fraction of the time, which is why it survives a week where everything else does not.

The questions get batched rather than pinged at you one at a time across an afternoon. If three conversations all need something from you, they come together.

Section 04

The asking shrinks as the weeks go by

This is the part men do not anticipate.

Nobody asks you twice why you left London. Once you have answered it, that answer exists, and it goes out the same way the next time a woman asks. Same with your family, your work, what you are looking for, the holiday you keep talking about, the thing you are weird about.

The first fortnight has the most questions in it. After that the picture is built and what comes to you is genuinely new. Something unusual she asked. A decision only you can make. Whether you want to see her again.

Section 05

What never comes to you

Most of the conversation does not need you and should not reach you.

Whether to answer at eleven or at two. How to respond to a joke about her commute. Whether to let a conversation that has died quietly die. What to say when she asks what you are doing this weekend before anything has been proposed. Which of four conversations is worth pushing toward an evening.

Those are judgement calls about running apps, and handing them back to you would defeat the purpose. You did not hire the work out so you could be consulted about it hourly.

The line is simple. Facts about your life come to you. Decisions about the apps do not.

Section 06

The one you should insist on

Ask about this before you hand anything over to anybody, because it is the question that tells you what you are buying.

Ask what happens when a match asks something personal. If the answer is that something sensible gets written and you can correct it later, walk away. Correcting it later means correcting it at the table, in front of her, which is the one place you cannot.

If the answer is that it comes to you first, you are talking to somebody who has thought about the date rather than the inbox.

Section 07

Why this is the whole thing

Everything good about handing your apps over depends on the woman who shows up meeting the man she has been talking to for a week.

Better photos get her to the table. Faster replies get you more tables. But the only thing that makes the evening work is that nothing said in your name was invented, so there is nothing to walk back and nothing to remember.

You should be able to sit down having read nothing, and still be the same man.

Section 08

The short version

Your photos and your whole profile get rebuilt. The swiping and the texting get carried day to day in your register, evenings get booked, and it keeps running rather than stopping after the first one.

What stays yours is the truth. Anything only you know comes to you in a line, goes back out in your words, and is never made up on your behalf. That is not a small procedural detail. It is the reason the woman across the table recognises you.