Dabi knows to keep his distance from you, that way he can keep control over his feelings. Make sure they don't grow, and stay the little seed that they are, planted the first time he saw you.
The other members probably didn't even pay attention, just another person in the league. Just some low lever villain that had a quirk useful enough for all for one's goals. But the moment you walked into the hideout, in your bright clothes, perfectly groomed and clean features, looking so out of place in the partially abandoned building. He was bound to fall, even if he didn't realize it at first.
He knows he should keep his distance. If he gives in to his feelings, he might loose sight of his goal. And yet.
"Not bored, sitting all by yourself here?" He asks, leaning on the bar counter and glancing down at the cocktail you're sipping on.