

This article is an excerpt from the Shortform book guide to "Mating in Captivity" by Esther Perel. Shortform has the world's best summaries and analyses of books you should be reading.
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What do sexual fantasies tell us about ourselves? What do they symbolize? And why do we keep them to ourselves?
Our sexual imagination is a gateway to our sexuality—erotic fantasies reveal a lot about our inner sexual worlds. According to psychotherapist Esther Perel, sexual fantasies are unlike regular fantasies in the sense that they are symbolic, not literal. Further, sexual fantasies are often in contradiction with our self-image which is why people tend to keep them to themselves.
Keep reading learn about the psychology behind sexual fantasy and what your sexual thoughts reveal about you.
Eroticism and Sexual Imagination
Sexual fantasies are imaginings that create desire and excitement. Historically, Christianity viewed sexual fantasy as a sin, and psychology viewed it as a perversion. Today, though, psychologists consider sexual imagination a natural, healthy part of adult sexuality. Eroticism thrives on imagination and creative freedom. Fantasy fits naturally into eroticism, whether the fantasy is unique to the individual or shared by the couple.
When most people think of fantasies, they tend to think of cowboys, kilts, or threesomes. However, fantasies aren’t always scripted, articulate, or wildly different from real life—they’re simply fictions that create desire. Women tend to have more trouble owning their sexual thoughts, so they may think they don’t fantasize even if they do.
Example #1: Lucas spent his adolescence pretending to be straight, going so far as to sleep with a cheerleader because he thought it would be suspicious if he turned her down. Once he grew up, he moved away and came out. He knows that many gay guys fantasize about turning straight men, so he does still pretend to be straight sometimes, so other gay men will desire him.
Example #2: Claudia imagines how her husband Jim might approach her in a way that’s totally different from how he comes onto her normally. Instead of going straight for her breast, he touches her arm first, and then asks if he can touch her breast. Even though it’s perfectly possible that Jim could approach Claudia this way in real life, it’s still a fantasy, because he doesn’t.
Should You Share?
People often keep quiet about their fantasies. Reluctance to share fantasies can be because of embarrassment, shame, or fear of judgement. Because so few people talk about their fantasies, there’s no benchmark for what’s normal. People don’t know if everyone else is thinking the same things they are.
Sharing fantasies can be a turn on, but it can also make them less powerful as aphrodisiacs, or at worst result in devastating judgement. Perel doesn’t think it’s necessary to share our fantasies if we don’t want to.
If you do want to share, you need to be sensitive and tactful. Certain fantasies, especially those that involve violence or power imbalances, might frighten or offend your partner. Even if the fantasy isn’t that intimate, sharing it can be an intimate experience.
You also need a healthy sense of separateness to enter someone else’s fantasy. You might not find their fantasy sexy or you might not like it, but however you feel about it, your reaction will have an impact on your partner. Eroticism doesn’t thrive in a critical and judgmental environment.

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Here's what you'll find in our full Mating in Captivity summary :
- Why it's difficult to have a good, erotic life within a long-term relationship
- What makes up our individual sense of desire and our desire for our partners
- Tips on how to retain desire in a committed relationship