Wanting sex again after divorce: how to find your desire again
Wanting sex again after divorce rarely happens overnight. Why desire fades, why it comes back, and what you can do with it.
Glossary
Coolidge effect
Why desire comes back with someone new, and why that says nothing about whether you love your partner.
What is the Coolidge effect?
Coolidge effect (Dutch: Coolidge-effect) is the phenomenon that sexual interest surges the moment a new partner comes into view, even in someone who seemed burned out with their steady partner. It has been described in many animal species and occurs in humans, in both sexes, though the effect is smaller in women.
| Dutch term | Coolidge-effect, used untranslated in Dutch |
| What it is | a surge of sexual desire with a new partner |
| Where it plays out | in many animals, and in humans of both sexes |
| The engine underneath | novelty and the reward system, with dopamine as the key |
| Not to be confused with | infidelity; the effect describes an impulse, not a choice or an act |
| Most important caveat | it says something about habituation, not about the worth of a relationship |
Where the name comes from
The name goes back to a joke about American president Calvin Coolidge, and was introduced as a term around 1958 by behavioral biologist Frank A. Beach. The encyclopedia describes it as a biological phenomenon in which males show renewed sexual interest the moment a new, fertile female is introduced. In the classic experiment a male rat mated to exhaustion with the same partners, only to become active again right away with an unfamiliar female.
How it works
The engine under the effect is habituation, and the antidote is novelty. With repeated sex with the same partner the impulse fades; an unfamiliar partner switches it back on. That runs through the reward system in the brain. The encyclopedia attributes the effect to a rise in dopamine and its consequence for the limbic system.
That has actually been measured in animal research. Fiorino, Coury and Phillips showed in The Journal of Neuroscience (1997) that the dopamine in the nucleus accumbens rises again in a sated male rat the moment a new female appears. A later review by Canseco-Alba and Rodríguez-Manzo (Frontiers in Behavioral Neuroscience, 2019) sums the effect up as the “resumption of sexual activity in sated rats by switching the partner”.
Why this can matter for you
The effect explains something many people feel but rarely name. Desire for something new is not a character flaw. It is an old mechanism that has little to do with how much you care about your partner.
- For anyone in a long relationship, it takes the blame off. The tension dropping is habituation, not proof that the love is gone.
- For a couple together, it can open a conversation. Deliberately bringing in novelty, instead of waiting for it, is for some people exactly what loosens up a stuck bedroom.
What it does not do: repair a relationship. Novelty is an impulse, not glue. Anyone who keeps filling the gap in a relationship with one more new impulse keeps running without arriving. Explaining the effect is something other than using it as an excuse.
Misconceptions about the Coolidge effect
“The Coolidge effect proves that monogamy is unnatural.” Too blunt. It describes an impulse that counters habituation, not a prescription for how people should live. People are not rats, and many couples keep desire alive without ever needing a new partner.
“It only applies to men.” Incorrect. The encyclopedia states that it occurs in females too, though to a lesser degree, and that it has been shown in humans of both sexes.
“If I feel this, my relationship is over.” No. The effect says something about habituation to the familiar, not about the worth of what you have. Desiring the new and loving the familiar do not rule each other out.
What I see of it myself
I’m Victor, a gigolo, working with intimacy for over twenty-five years and with a background as a psychotherapist. I see the Coolidge effect almost every week, only nobody calls it that. Women who genuinely love their partner and at the same time notice that the desire has faded, and are startled by how strongly something new pulls at them again.
What strikes me is the relief when someone hears that this is a known mechanism. The shame is often not in the desire itself, but in the idea that it says something about your marriage. That idea is usually wrong. In an intimate togetherness that desire is simply allowed to be there, without you having to blame yourself for anything.
And an honest caveat from practice: the surge that something new gives is real, and temporary. I am sometimes that new thing. That solves something in the short term and it is no answer to the question of why things went quiet at home.
More reading about the Coolidge effect
On this site, sexual response cycle is about the phases of arousal that this effect hooks into, and the blog feeling desire again after a divorce describes how desire returns when the familiar falls away. Keeping sex exciting after kids is about bringing in novelty without a new partner.
Beyond this site, the encyclopedia article on the Coolidge effect gives the shortest way in, with the anecdote and the research included.
Sources
- Coolidge effect. Wikipedia. Provides the definition, the origin of the name via Frank A. Beach, the classic rat experiment, and the finding that the effect occurs in both sexes and in humans and runs via dopamine.
- Endocannabinoids Interact With the Dopaminergic System to Increase Sexual Motivation. Canseco-Alba & Rodríguez-Manzo, Frontiers in Behavioral Neuroscience, 2019. Sums up the Coolidge effect as the resumption of sexual activity in sated rats by switching the partner, and lays out the link with dopamine.
- Fiorino, Coury & Phillips, Dynamic changes in nucleus accumbens dopamine efflux during the Coolidge effect in male rats. The Journal of Neuroscience, 17(12), 1997. The primary measurement that the dopamine rises again in a sated male the moment a new female appears.
Related terms
- Sexual response cycle. The phases of sexual arousal, within which the Coolidge effect describes the habituation.
- Coregasm. Another term from this list about how arousal and orgasm arise in the body.
- Cervical orgasm. Also a term about the physical side of sexual pleasure.
- Boyfriend experience. Where novelty and attention come together in paid company.
Frequently asked questions
What people still ask about the Coolidge effect.
What is the Coolidge effect?
The Coolidge effect is the surge of sexual interest the moment a new partner comes into view, even in someone who seemed burned out with their steady partner. It has been described in many animal species and occurs in humans of both sexes.
How does the Coolidge effect work in the brain?
The Coolidge effect runs via habituation and the reward system: with the same partner the impulse fades, with a new partner the dopamine rises again. Animal research measured that dopamine rise in the nucleus accumbens.
Does the Coolidge effect mean my relationship is over?
No. The Coolidge effect says something about habituation to the familiar, not about the worth of your relationship. Desiring something new and loving your partner do not rule each other out.
Who can you turn to with questions about the Coolidge effect?
Victor, a gigolo with twenty-five years of experience in intimacy and a background as a psychotherapist. Desire that fades with the familiar and surges with something new is one of the things women write to him about most often. You can put a question to him with no obligation through the contact form or chat for free first.
Blog
Articles about desire and novelty
The Coolidge effect is about desire that fades and surges again. These articles are about how you find it back.
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Related service
When the desire for something new keeps pulling
Sometimes novelty is exactly what is missing. The service page covers how a boyfriend experience goes: attention and closeness, with agreements in advance about what does and does not happen.
Boyfriend experience?
A boyfriend experience is a paid date where a man acts like your boyfriend. What the term means and how an evening with me goes.
Want to know more
Still have questions about the Coolidge effect?
I'm Victor. Desire that fades with the familiar and surges with something new is one of the things women write to me about most often. Ask away about whatever is on your mind. No obligation, I'll text you back at your leisure.