What Is Sternberg's Triangular Theory of Love?
Short Answer
Sternberg's theory proposes that love has three components: intimacy (emotional closeness, understanding), passion (sexual and romantic desire), and commitment (decision to maintain the relationship). Different combinations create different love types—and the balance shifts over time.
Full Answer
Sternberg's triangular theory holds that love is built from three components, and their combinations define different kinds of relationships.
The three components
- ●Intimacy — emotional connection: knowing and being known, vulnerability, trust, and comfort. It develops slowly through repeated positive interaction and is the foundation of deep relationships.
- ●Passion — the spark: sexual desire, romantic intensity, and physical attraction. It's high early (infatuation) and typically fades over time, though it can be rekindled through novelty and deliberate effort.
- ●Commitment — the decision to stay and nurture the relationship through challenges. It can exist without passion or intimacy.
The combinations create different relationships
- ●Infatuation (passion alone) — exciting but unstable.
- ●Empty love (commitment without intimacy or passion) — hollow.
- ●Romantic love (intimacy + passion, no commitment) — intense but risky.
- ●Fatuous love (passion + commitment without intimacy) — what causes people to marry quickly and regret it.
Consummate love is the goal
All three together—and it's rare to maintain simultaneously because passion naturally declines. Successful long-term couples actively rebuild intimacy (date nights, vulnerability) and normalize that passion cycles rather than disappears. Research (Reis, 2006) confirms that couples who maintain novelty (travel, shared challenges, new experiences) preserve higher passion.
Find Out for Yourself
Take the Sternberg Love Triangle Test free — full result with strengths, blind spots.
Take the Sternberg Love Triangle TestRelated Questions
Should I worry if passion fades after the first year?▼
No, that's normal neurochemistry (dopamine decline). It's a sign to invest in intimacy and novelty, not a sign love is dying. Couples who understand this adjustment make it successfully.
Can you have a good relationship with only intimacy and commitment but no passion?▼
Depends on both partners' needs. Some couples thrive in companion-love relationships. Others feel unfulfilled without passion and may seek it elsewhere. Explicit conversation is essential.
How do I revive passion in a long-term relationship?▼
Novelty, risk, and vulnerability. Travel, new experiences, honest conversations, and—if there's willingness—exploring sexuality together. Passion follows from breaking routine and deepening intimacy.
More on Relationships & Love
The best personality tests for couples: 1) Attachment Styles — predicts relationship satisfaction most strongly. 2) Love Languages — improves daily communication. 3) Big Five — reveals trait compatibility. 4) Conflict Styles — shows how you handle disagreements. Take all four (~20 min total) for a complete relationship profile.
Yes, attachment styles can change through conscious effort, therapy, and secure relationships. While your early attachment pattern is relatively stable, neuroscience confirms that repeated positive relational experiences can rewire attachment responses. Most people see meaningful shifts within 6–12 months of intentional work.
Avoidant attachment is an insecure attachment style marked by discomfort with intimacy, emotional distance, and an over-reliance on independence. People with avoidant attachment suppress their need for connection, withdraw under emotional pressure, and often appear self-sufficient or dismissive in close relationships. It develops in childhood when caregivers were emotionally unavailable, and it affects roughly 25% of adults.
Develop secure attachment by building self-awareness, choosing emotionally responsive partners, practicing vulnerability, and engaging in therapy if needed. Secure attachment grows through consistent, attuned relationships where your needs are met and you gradually internalize that people are trustworthy.
When partners have different love languages, effort and affection may go unrecognized: one partner may feel unloved despite their gestures, while the other feels unappreciated. Mismatch causes resentment unless both partners actively translate their expression into the other's primary language.
Quality time and words of affirmation are the most frequently reported primary love languages across cultures. Quality time ranks slightly higher in research samples, with 30–35% of respondents identifying it as their primary way of experiencing love.