The Commitment-Before-Sex Rule
Delay sex until commitment is clear enough to test the relationship soberly
- Difficulty
- Advanced
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 93%
Louise Perry proposes delaying sex until a clear commitment threshold, ideally engagement in her view, while acknowledging that she published a more achievable three-month rule. Her mechanism is that waiting preserves clearer judgment, creates time to notice and act on red flags, and tests whether a prospective partner will accept a meaningful boundary. She also frames commitment as protection against the unequal consequences of an unintended pregnancy. The method is not a guarantee of safety, compatibility, or a lasting marriage, and the transcript does not establish that engagement is a medically validated threshold. It is a conservative dating decision rule: decide the boundary in advance, communicate it, then treat the other person's response and conduct during the waiting period as evidence.
Origin
Extracted from The Diary of a CEO
Core principles
- 01Sex can change emotional judgment
- 02Pregnancy risk is not distributed equally
- 03A boundary reveals willingness to commit
- 04Clear decisions need time and distance
How to run it
- 1
Set the threshold
Choose in advance what demonstrated commitment must exist before sex. Perry's preferred threshold is engagement, while her book offers three months as a more achievable boundary.
Pro tip Pick the rule before attraction or pressure makes it harder to define.
Watch out The transcript presents these thresholds as Perry's advice, not as scientifically proven cutoffs.
- 2
State the boundary
Tell the other person what you are and are not willing to do without presenting the boundary as a negotiation.
Pro tip Use plain language rather than relying on hints.
Watch out A boundary cannot substitute for consent, safety planning, or contraception.
- 3
Watch the response
Treat patience, pressure, respect, and consistency as information about the person's intentions and character.
Pro tip Pay more attention to repeated conduct than persuasive promises.
Watch out An engagement or patient response does not guarantee safety or fidelity.
- 4
Investigate compatibility
Use the waiting period to examine values, reliability, conflict behavior, and possible red flags without assuming the relationship must continue.
Pro tip Ask whether you would make the same choice without the hope that sex will secure commitment.
- 5
Decide with evidence
Proceed only if the commitment and relationship still meet your preselected standard. Leave if the boundary is repeatedly challenged or the evidence points away from compatibility.
Pro tip A respected boundary is evidence, not proof.
In the wild
A person seeking marriage says before a third date that they will not have sex before engagement. The date argues that the rule is unreasonable and repeatedly tries to reopen the issue. Rather than interpreting the pressure as passion, the person treats it as evidence that their boundaries and goals are incompatible and ends the relationship.
→ The waiting rule reveals incompatibility before emotional and practical stakes rise.
A couple agrees to wait and spends several months meeting friends, discussing children and finances, and observing how each handles disagreement. They discover a major conflict about having children and separate without assuming that time invested requires them to continue.
→ The delay creates space for a clearer compatibility decision.
Common mistakes
Treating the threshold as a guarantee
Engagement or elapsed time cannot prove that a partner is safe, compatible, or permanent. The rule supplies evidence and distance, not certainty.
Choosing the rule under pressure
A boundary invented during an escalating encounter is harder to apply consistently. Set it before the situation arises.
Ignoring conduct during the wait
Waiting has little value if pressure, dishonesty, or red flags are rationalized instead of assessed.
Is it for you?
Best for
People seeking a committed heterosexual relationship who want a strong boundary around sex and pregnancy risk.
Not ideal for
People who do not share the framework's goal of commitment before sex or who treat its proposed threshold as universal evidence rather than Perry's advice.
From the transcript
“I think probably actually waiting till engagement is a better call.”
“if you hold off on having sex you hold off on having that effect”
“if you see red flags you're more likely to respond to them properly”
From the episode
"Casual Sex Is Almost Always Dangerous For Women!" This Is What Casual Sex Is Really Doing To Women - Louise Perry