We tend to picture intimacy as a peak — a high point of closeness you reach and then, hopefully, hold.
But the people who feel genuinely close to others, year after year, will usually tell you something different. Intimacy isn’t a summit. It’s a practice. Something tended, not captured.
Understanding what it’s actually made of helps explain why.
Three threads, not one feeling
In the 1980s, the psychologist Robert Sternberg offered a simple, durable way of understanding love. He suggested it isn’t one thing but three distinct components woven together: intimacy, the sense of closeness, warmth, and being truly known; passion, the spark of attraction and aliveness; and commitment, the decision to keep showing up over time.
What makes his triangular theory so useful — and it has held up well, with empirical support gathered across cultures — is that these three threads behave very differently from one another.
Passion tends to arrive fast and burn bright, then settle. Commitment usually builds slowly and, once established, stays relatively steady — even deepening as a relationship matures. And intimacy? Intimacy depends entirely on ongoing sharing. It grows when it’s tended and quietly fades when it isn’t. It is the one thread that asks for continual care.
