Situation 01 · An idealizing story on the third date
Third date, wine, the conversation turned to the past. He says: "I had an incredible woman. We lived together four years, and those were the best years of my life. She was insanely smart, subtle, felt me through. We broke up over stupid reasons — some nonsense around her work, I acted dumb, she did too. I still don't understand how we missed it." You listen and don't know what to feel. He seems sincere. He seems not to be trying anything. But by the end of his story you somehow feel a little empty.
✗ Wrong exit
Argue with him inside your head: "well, I'm smart too, I can be subtle too." Start competing with her — mentally, through effort, through attempts to impress him the same way. That's a three-year-long road, at the end of which you'll discover that all your energy went into outweighing a ghost who was never a real person. An even worse variant — conclude "so he can love, I can hear it" — and quickly attach.
✓ Right exit
Don't rush to a diagnosis — one conversation isn't a verdict. But remember the emptiness you felt, as precise information. In two or three weeks, check: does he keep returning to her. If he returns often, in different contexts, with the same intonation — that's a signal. Not "he's bad." He's just not where you are yet. Then it's your choice: wait while he catches up, or acknowledge that you came to someone else's farewell that hasn't ended yet.