“I get anxious when I don't hear back for a while. It's mine to manage — I'd just rather say it than have you guess.”
Instead of: You're fine? You'd tell me? Are you sure?
Early relationships are where the intensity has the most room and the least history to hold it. Six weeks in there is enormous feeling and almost no evidence — which is exactly the combination the mechanism runs on.

Not inevitable. A pattern common enough that recognising the stage you are in is genuinely useful.
Fast, intense, and mutual enough to be convincing. Some of this is ordinary new-relationship chemistry and some is a regulation arrangement forming. Both feel identical from inside, which is the problem.
A slower reply, a flatter tone, a plan moved. The response is out of proportion to the event and there is no shared history to weigh it against. This is the first real fork.
Asking whether things are okay, in various forms. It works briefly, then does not, and the frequency rises. If this is running weekly by month three, that is the pattern rather than the relationship.
Other friendships have thinned, plans revolve around them, and their mood sets your day. Usually invisible while it happens and obvious in retrospect.
Either it redistributes — other people, other things, a limit stated calmly — or it consolidates into the dynamic that reliably ends things. This is the point at which what you do actually decides the outcome.
Two hard conversations, both better said plainly than performed.
“I get anxious when I don't hear back for a while. It's mine to manage — I'd just rather say it than have you guess.”
Instead of: You're fine? You'd tell me? Are you sure?
“There's something about how I do relationships I'd like to tell you at some point. Not tonight, and not because anything's wrong.”
Instead of: [Waiting until month eight and a crisis]
“I have a diagnosis I manage, and I'm telling you because I'd rather you heard it from me than worked it out.”
Instead of: I'm difficult. You'll leave eventually. Everyone does.
“I'd like to see you Saturday. I'd rather ask than wait and read something into it.”
Instead of: [Going quiet to see whether they notice]
“I noticed I was about to test you, and I'd rather just say the thing.”
Instead of: It's fine. Do what you want.
“I'm going to keep Thursdays for my own people. It's not about you — it's about me not making you everything.”
Instead of: [Cancelling on everyone else for four months]
Including the one about when to tell someone.
Once it has become a relationship rather than a few dates, and before a crisis explains it for you. There is no right week. What is reliably worse is either extreme — leading with it, or waiting until something has already gone badly.
What it means in practice rather than the clinical picture. 'I feel things very intensely, ambiguity is hard for me, and I'm working on it' tells them more useful information than a diagnostic label does.
Some people will, and that is information you would want early rather than in year three. It is also worth noticing whether the fear of this is what keeps disclosure permanently postponed.
Not on its own — early relationships are intense for everyone. What is worth watching is whether other parts of your life are contracting around it. That is the marker, rather than how strongly you feel.
Not necessarily, and a new relationship at a very unstable point tends to carry more than it can. If everything is currently at an eight, that is worth taking into account rather than overriding.
Chapter 5 on relationships as regulation, chapter 2 on the favorite-person dynamic, and chapter 7 on the sabotage cycle. Those three between them describe most of what this stage involves.