What psychology actually says
Robert Cialdini's well-documented research on scarcity describes how reducing access to something tends to increase its perceived value — a real mechanism that applies here. When someone is actively available, they're often taken for granted; when that access disappears, the attention increases.
This is a general pattern, not a guarantee about any specific person.
What no one can predict
Whether your specific ex will reach out depends on them — their attachment style, what ended the relationship, how they're processing it, what's happening in their life. No formula produces a reliable outcome. Anyone who tells you “do this and he'll be back in 30 days” is selling something.
What's worth caring about more
No contact is genuinely most useful as a practice for your own recovery — reducing the intensity of the attachment, giving yourself space to think clearly, building a life you're actually living rather than one that's on pause.
The people who report the best outcomes — regardless of whether their ex returned — are the ones who did no contact for themselves first. The ones who did it purely as a strategy to produce a specific response from their ex tend to find it unsustainable and often end up more stuck than before.
Do it for you first. The rest is out of your hands.
No Contact 40 Days keeps the focus where it belongs: your streak, your reasons, your life.
Get the app — free to tryCommon questions
How long does no contact have to be before he reaches out?
There's no reliable number — some men reach out in a week, some never do. Building your plan around a timeline for his response is building on sand.
What should I say if he does come back?
Whatever is actually true for you at that point — ideally from a settled place, not from the immediate spike of the message arriving. You don't need a script; you need time.
No Contact 40 Days is a personal-motivation and self-improvement tool. It is not therapy or medical or mental-health advice, and it is not a substitute for professional care. If you're struggling, please reach out to a qualified professional or a local support line.