Micro-cheating is the catch-all term for small behaviors that keep a romantic or emotional door propped open with someone who is not your partner.
It looks minor by design: the saved chat, the selfie sent to one particular person, the inside joke kept in private, the relationship status quietly omitted.
The behavior itself is rarely the problem. The secrecy around it is. If it would need explaining or hiding, it is already carrying more weight than nothing.
The useful question is not whether you technically crossed a line, but what this small habit is doing for you and what it is taking from the relationship it hides from.
Micro-cheating is best read as an early signal, not a verdict — a place to get honest before it becomes a full emotional affair.