Yes, once. Here is the text.
Anyway, unrelated: are you free Thursday or Saturday? Happy to book somewhere near you.
That is a double text and it is completely fine. Send it once, in daylight, and then leave the thread alone.
The rule you have been given, that a second unanswered message makes you desperate, is not really about the number. It is about what people usually put in the second message, which is anxiety with a question mark attached. Two messages that move things forward read as confident. Two messages that ask why you have not been answered read as a request for reassurance, and that is what changes the temperature.
Tuesday, 10:52 p.m. You matched nine days ago, one date got booked and then cancelled by him, and your last message was a joke about the bar you never went to. It has been sitting there for thirty-one hours. You sent a “?” nineteen minutes after the joke and then deleted it, which he already saw.
If your unanswered message was a joke or a story: you are clear to send one plan-shaped message. Do it above, verbatim if you like.
If you have already sent two or three since his last reply: stop for now. Not forever, and not as punishment. The section below covers how to come back from that without an apology tour.
The double text that works, and the one that costs you
Same count, opposite effect, and the difference is whether the message needs something from him emotionally.
The versions that work add material. A specific plan with a day in it. One genuinely useful thing (“that place we talked about does a Sunday roast, noted for later”). A clean, low-stakes piece of your life. They all share a shape: he can answer in eight words, and if he does not answer, you have not visibly bled.
The versions that cost you ask him to account for the silence. “?” on its own. “Did I say something?” “Hello?” “I guess you’re busy.” “You’ve gone quiet, everything okay?” three hours after a normal gap. Also the passive-aggressive joke about his response time, which is the same message wearing sunglasses.
There is a third kind that works and gets forgotten: the closing double text. If you have decided you are done waiting, one short message that ends it cleanly is a perfectly good use of your second turn. “Seems like the timing’s off, no hard feelings. Take care.” It is not a threat and it is not bait. It is you shutting a door rather than leaving it ajar for three weeks.
The other quiet mistake is the escalating apology: “sorry to double text!” You have nothing to be sorry for and the apology installs a hierarchy where he is the busy one and you are the interruption.
One test that settles most drafts. Read your second message and ask whether it would still make sense if he simply had not looked at his phone. If it only makes sense as a response to being ignored, rewrite it.

How long to wait depends on what you sent
Timing is not a universal number, it is keyed to what is sitting unanswered.
An unanswered logistics question, like which night works, deserves a nudge sooner. Twenty-four hours is not clingy when a plan is pending, because plans expire. “Still on for Thursday?” on Wednesday afternoon is admin, not pursuit.
An unanswered joke, story, or meme is different. There is nothing to answer, so nothing is owed. Give it two or three days and then send something with a day in it.
An unanswered vulnerable message is the one to be careful with. If you told him something real, or said you liked him, or raised something that bothered you, do not double text it with a lighter version. Adding a joke on top teaches you both that the real thing can be walked back. Wait, and if you need to say anything after several days, say the plain version once: “I’d still like an answer to what I said, whenever you’re ready.”
Length of acquaintance matters too. Nine days in, a second message is nothing and you both have other threads. Nine months in, an unanswered afternoon is not a texting question at all.
If you are actually in a relationship, the whole frame changes. Counting your own messages to your own partner is a symptom, not a strategy, and the useful move is a call or the sentence itself rather than a carefully calibrated second text. If you are being left on read after a fight, do not send the lighter follow-up that pretends the fight is over. Send one line that names the wait and stops:
I’m not going to keep texting into this. Call me tonight or tomorrow and we’ll sort it out.
Then put the phone somewhere else. In an established relationship the problem is almost never the count. It is that silence is being used as an answer, and no volume of messages from you can fix a person who has decided not to speak.
Type it in Notes, not in the thread
Open your notes app and write the message there. This takes forty seconds and it removes the only real risk, which is not the double text. It is the accidental triple text sent by a thumb that wanted relief.
While it sits there, drop two pieces of received wisdom.
The three-day rule is dead and it was never advice, it was a tactic for looking unavailable. People who like each other in the same week text in the same week.
“If he wanted to, he would” is the other one, and it is half true. It is a decent read of a long pattern and a terrible read of a single Tuesday. Applied to thirty-one hours of silence, it flattens people who are bad at phones into people who do not care, and it will have you writing someone off for the crime of having a chaotic Monday.
Then reread the draft once. If it contains a day, a place, or something you actually wanted to say, send it. If it contains the words “just wondering” or a question mark on its own line, rewrite it.
When it has already become a triple text
You sent the joke, then the “?”, then a follow-up meme to make the “?” look casual. It is not the end of anything. It is just information he now has, and the only way to change it is to be different from here, not to explain the last three messages.
Do not apologize for the volume. Do not go dark for six days as a corrective, which is the same anxiety on a longer wire. Wait two or three days, then send one plan-shaped message and behave as though the thread is unremarkable.
And keep count honestly, because this is where the actual limit lives. Two messages in a row is a normal human being. Four unanswered messages in a row, with none of them getting a reply, is a thread you are now writing alone. That is your stop-rule: after the double text, no third initiation until he starts something himself.
How to read whatever comes back
Reply plus a plan is the whole answer. Book it, close the app, go to bed.
Reply with no plan, twice in a row, is not a maybe. It is a polite no that is hoping you will not make it explicit. You can make it explicit once, kindly: “Do you want to pick a night, or shall we leave it?” Then believe what you get.
Read and no reply, after a plan-shaped message, is an answer. It is a rude one, and it is unambiguous.
A reply four days later with no acknowledgement of the four days tells you what your position in the queue is. Not that you are worthless. That you are optional, for now, to this person.
Watch also for the plan that is far away. An enthusiastic yes attached to a date three weeks out, from someone who has been free every weekend since you matched, is usually a way of saying no while sounding keen. Take it if you want, and stop rearranging your fortnight around it.
And notice your own body while you wait, because it is telling you something about the match rather than about him. If a thirty-hour gap put you on the ceiling, the double text is not really the problem you came here to solve. Wanting steady contact is a legitimate need. Someone who needs to be pursued to stay interested is a bad fit for that need, and no perfectly engineered second message fixes the mismatch.

After you hit send
Put the phone on the charger, face up if you like, in a room you are not sitting in. You have done the only thing that was available to you: you made a clear ask that a person can answer in eight words.
Double texting is not a character flaw. Auditioning is. One second message with something in it, then let his reply answer the question for you. If nothing comes back, you did not lose by sending it. You just got your answer a week earlier than the people still waiting for permission.
