They know you, you don't know them

They listen well, remember details, and stay reliable. Ask them something personal and they go brief, joke, or turn the question back on you.

“Douées pour faire parler les autres, elles se referment instantanément lorsqu'on leur retourne quelques questions personnelles.”

Sometimes it's just privacy

Plenty of people are simply reserved and think their private life is their own business. That is a personality trait, not a symptom.

Fear of being judged

For anyone focused on the impression they make, sharing opinions, choices or contradictions feels risky. Silence keeps the image safe.

The research on social anxiety

Cuming and Rapee found that more socially anxious people disclose less, even to friends and partners. They read it as self-protection against negative evaluation.

“une stratégie d'autoprotection face au risque d'une évaluation négative”

Avoidant attachment keeps distance

In Bowlby's framework, avoidant attachment prizes independence and limits closeness, especially when closeness means being vulnerable or needing someone.

Built early, felt for years

That style forms in the first relationships and follows people into adult love, friendship and family, showing up as a person who pulls back when things get intense.

Self-critical perfectionism

Richardson and Rice found that the harder the day these perfectionists had, the less likely they were to talk about it. Saying "I had a bad day" makes you visible.

“plus leurs journées avaient été difficiles, moins ces personnes semblaient enclines à parler de ce qu'elles traversaient”

When it stops being a choice

They tell you what they decide to tell you and edit out anything that could shift how you see them. Done rigidly, they end up ignoring their own needs.

“Ne pas parler de soi devient alors une manière de se protéger de son propre perfectionnisme.”