It is 4 words that can mean 2 completely opposite things, which is why you cannot stop turning it over.
There is a way to tell them apart, and it is not in the sentence.
Free to try. We never store your chats.
Space with a door. They are overwhelmed and they are telling you before they say something worse. This version usually comes with a shape — some sense of a return, even a vague one.
Space as an ending. A softer way to leave, said by someone who does not want the conversation that ending properly requires. This version is flat and has no next step in it.
Did they leave anything open. "I'll reach out" is a door. "I just need space" with nothing after it is not.
Have they done this before, and what ended it. If they have gone quiet before and come back, notice what brought them back — time, or someone reaching first.
What was happening around them. A hard month at work and a sentence like this are not the same event as a hard month with you.
Short, and give them the thing they asked for. Anything that argues with the request proves the request was needed.
Do not ask how long. It sounds reasonable and it is another demand in a moment when they said they cannot take one.
The hardest part is that the correct move is usually to do nothing for a while, and doing nothing feels like losing.
It is not. A message sent into space gets read as pressure, and pressure is what makes the door harder to open later.
If they blocked you or told you clearly to stop, that is not space. That is an answer, and we will not help you get around it.
Paste the thread and it tells you which version this looks like, and why — reading this message against the months before it.
It also tells you whether today is a day to send anything at all.
Try it on your conversation