Sternberg's Triangle (Intimacy, Passion, Commitment) Read in a Conversation

Three sides to describe a love

Psychologist Robert Sternberg proposed a now-classic grid: love would rest on three components — intimacy (closeness, confiding, the sense of connection), passion (attraction, desire, intensity), and commitment (the decision to last, to build). Depending on the dosage of these three sides, you get different types of relationship: empty love (commitment alone), romantic love (intimacy + passion, no commitment), consummate love (all three together), and many more.

In the article that follows, I explore communication within the couple. On this theme, I designed a couple communication test to help you take stock of your communication patterns as a couple, with a guide to go further. And if you have real messages to decode, ScanMyLove analyses your conversations with your partner from a simple export and reveals the true dynamic of the relationship. I also wrote a book on this subject, Together, but No Longer Talking, if you would like to go further.

These three components aren't abstract: they show in how two people write to each other. And it's the balance among them, readable over time, that draws the face of a relationship.

Why a message isn't enough to measure love

A passionate message doesn't tell intimacy; a tender one doesn't tell commitment. Each component is expressed in different registers, and it's their proportion across the whole of the exchanges that informs. A couple may overflow with written passion yet sorely lack intimacy (few real confidences) or commitment (no shared projection).

The written word lets you weigh these three registers over time. Re-reading the history, you assess: deep confidences (intimacy), marks of desire and intensity (passion), plans and commitments (duration). The imbalance, invisible in a message, reveals itself in the overall composition. If you would rather talk than read, Psy Lounge listens through a CBT-trained AI.

🔗 Analyze your conversations with ScanMyLove — Curious how intimacy, passion, and commitment balance out in your relationship? Upload your exchanges to see Sternberg's three sides weighed across your history.

The three sides, and their written markers

• Intimacy: confidences, sharing of daily life and vulnerabilities, support in difficulties, the feeling of being understood. Markers: messages where you truly tell yourselves, where you support each other.
• Passion: expressions of desire, emotional intensity, evoked physical drive, idealization of the other. Markers: messages charged with affect, desire, admiration.
• Commitment: shared plans, projection into the future, reliability, constant presence. Markers: "we'll," "when we…," regularity and constancy of exchanges.

The grid's value is spotting what's missing: a very passionate relationship with no intimacy (you ignite but don't know each other), or very committed with no passion (you hold on by habit). Each imbalance calls for different work. I detail this point in Understanding Your Attachment Style.

Reading the triangle in the history

• The proportion of registers: are your exchanges mostly passionate, intimate, or logistical (commitment of façade)?
• The evolution: does passion decline while intimacy grows (a normal evolution) or does everything fade?
• The gap between you: one in passion, the other in commitment, without meeting.
• The absent side: what is manifestly missing from your messages?

Assessing this balance requires an overview. The analysis from ScanMyLove helps read the substance of your exchanges in the history — the share of confiding, intensity, projection — to situate your relationship on the triangle rather than judging it on a single register.

From diagnosis to working on the bond

Locating your relationship on the triangle opens concrete leads:

• Identify the weak side. Lack of intimacy? Cultivate real confidences. Lack of passion? Reintroduce intensity and surprise. Lack of commitment? Talk about the future.
• Accept evolution. Passion fluctuates; it's no failure if intimacy and commitment relay it.
• Spot the gaps. If each invests a different side, dialogue about expectations becomes essential.
• Deepen. Understanding your love needs, via a psychological test, helps name what's missing; and support at the practice supports rebalancing the bond.

The written word gives form to a three-dimensional love

Love isn't a single datum: it's a shifting balance among intimacy, passion, and commitment. The written word, by preserving the substance of our exchanges, lets you see which of these sides carries the relationship and which is fading. Where a passionate message makes you believe "all is well," the overall composition reveals what may be missing to last — and it's by naming the absent side that you can begin to nourish it.

Gildas Garrec, CBT practitioner