A green flag is behaviour that shows someone is trustworthy and good for you: he listens, keeps his word, respects a no. It's the counterpart to the red flag and, in romance, the mark of the steady, reliable hero.
For a long time the gentle man was considered the boring option. That's changed. Readers found a word for the idea that safety can be thrilling, and went looking for stories where tenderness lives in small things: a ritual, a lighter, a question that isn't in a hurry.
He remembers what you told him. He asks before he touches. When you pull back, he waits without sulking.
Milan in “Two Meters Apart” is on the opposite balcony every night at eleven with the same ritual as yours, and the closeness grows from small gestures. Konstantin in “The Night Archive” has waited two centuries for a real connection and pushes you towards nothing. And Aleks in “Ma'am” keeps his professional distance until you're the one who closes it.
At Everglow you do not just read it. You are the protagonist, and every chapter ends with your move.