1. A fast reply. Feels like proof someone dropped everything for you. Usually just means they had their phone in hand. Response speed costs almost nothing to produce, which is exactly why it’s such unreliable evidence on its own — track whether they ever reach out first instead.

2. Sustained eye contact. Reads as chemistry in the moment. Just as often reflects personality, cultural norms around conversation, or simple attentiveness that has nothing to do with attraction. On its own, it’s one weak signal — never a verdict.

3. Being genuinely easy to talk to. A great, flowing conversation feels like mutual interest because it’s enjoyable for both of you. Enjoyable and mutual aren’t the same thing — plenty of people are wonderful conversationalists with almost everyone. Watch whether they extend the conversation past what courtesy requires, not just whether they’re pleasant inside it.

4. One great conversation. The single most common overread in this whole pillar. One good hour tells you someone is capable of enjoying your company — not that they’re building something with you specifically. Pattern beats peak, always.

5. A compliment. Feels personal because it’s directed at you. Often costs the giver nothing and reflects general warmth more than specific interest — the same compliment might get handed out fairly freely. Compliments that reference something specific and remembered carry more weight than generic ones.

6. Liking or commenting on your social media. A low-cost, low-effort action that can happen on autopilot. Worth almost nothing on its own; worth more only if it’s paired with actual initiation elsewhere — a message, a plan, a reason to talk that isn’t tied to a post.

7. A flicker of jealousy when someone else comes up. Feels like unmistakable proof of real feeling. Can also just be ordinary social curiosity or a personality trait that shows up regardless of romantic stakes. On its own, it’s suggestive, not conclusive — look for whether it’s paired with consistent initiation over time, not just a single reaction in a single moment.

What actually carries weight instead

Initiation, extension, personalization, consistency across more than one occasion, and effort that cost the other person something to give — the five markers this pillar keeps coming back to, because they’re the ones that hold up. Everything on this list can be real without being any of those five. That’s not a reason to dismiss it; it’s a reason not to let it settle the question on its own.

For the full model, see Mutual Attraction: How to Read Reciprocity Without Guessing. If it’s specifically warmth versus initiation that’s tripping you up, see Why Enthusiastic Replies Are Not the Same as Mutual Investment.