When a rough patch arrives, they don't read it as destiny speaking — they treat sexual compatibility as something a couple cultivates through communication and effort over time, not a fixed verdict you either have or don't.
This flag is about a specific implicit theoryimplicit theoriesThe underlying, often unspoken beliefs a person holds about how relationships work — here, whether partners are simply fated to match or whether a bond is…Glossary →. Jessica Maxwell, Amy Muise, and colleagues named two: people high in sexual growth beliefssexual growth beliefsThe belief that a good sex life is created and kept up through effort, communication, and attention over time, rather than simply found ready-made between…Glossary → assume satisfaction "is attained from hard work and effort," while those high in sexual destiny beliefssexual destiny beliefsThe belief that sexual compatibility is fixed — you either have it with someone or you don't — so ongoing struggle in bed signals you chose the wrong partner.Glossary → assume it comes "through finding a compatible sexual partner" — and that struggles in bed mean the relationship was never right 1. Someone showing this flag leans growth: they expect a sex life to be built and rebuilt, not discovered intact. This is not a general relationship growth mindsetgrowth mindsetThe belief that a relationship can be developed through effort — skills like listening and repair can be learned, and obstacles can make the bond stronger…Glossary → (#61) — the research found sexual beliefs predict outcomes independently of general relationship beliefs; the bedroom has its own theory 1. Nor is it open sexual communication (#149) or curiosity over routine (#158); it is the belief underneath those behaviors, the reason a person bothers to do them at all.
The foundational 2017 paper spanned six studies and 1,896 participants. People higher in growth beliefs reported higher relationship and sexual satisfaction — and so did their partners 1. Destiny beliefs were more conditional: when sexual disagreements arose, destiny-minded people's relationship quality dropped more sharply 1. The amplifier pattern recurs where it matters most. Among couples coping with a woman's low desire, growth beliefs tracked higher desire while destiny beliefs tied to lower desire, more conflict, and more depressive and anxious symptoms 2; growth beliefs also predicted greater responsiveness mid-difficulty 3, and destiny beliefs predicted worse dyadic copingdyadic copingHow a couple handles outside stress together as a unit — splitting tasks and sharing honest disclosure — rather than each partner managing it alone.Glossary → in couples seeking assisted reproduction 4. This sits atop Dweck's implicit-theories work 6 and Knee's relationship-level destiny/growth distinction 7, echoed in a 2025 two-year study of 904 couples 8.
Why it matters
Why it matters. Every long relationship's sex life eventually changes, and the only real question is what each partner makes of the dip. The growth-believer says "we'll figure it out"; the destiny-believer says "maybe we're just not compatible" — same dry spell, opposite futures.
How to cultivate it
How to cultivate it. Catch the verdict reflex, name dry spells as seasons aloud, treat experiments as experiments, and separate logistics problems from love problems.
The honest caveat
The honest caveat. The research is young and mostly correlationalcorrelationalDescribing a link between two things without proving one causes the other — the pattern could run either direction, or both could share a third cause.Glossary →, so these are largely associations, and the protective effect is not bulletproof — a transition-to-parenthood study found growth beliefs alone didn't shield sexual well-being, though destiny beliefs still carried costs 5. Much of this flag's value is defensive, and none of it overrides genuine mistreatment or a lack of consent.