Curate, connect, and discover
Dick is a pretty boy. Everyone knows it, except him.
There is an unwritten rule about not hitting him in the face, everyone follows it, (even from his time as Robin some people already followed this rule). His siblings when by miracle they train together. His team when they get together to practice strategies and fighting methods. Even the damned villains and evildoers know not to hit the pretty bird in the face.
Dick never finds it strange. Somehow, he thinks it's simply because people have learned that punching him in the face isn't really going to stop him, if they're looking to confuse him, hitting the back of his head is more effective.
It's not until a drug dealer accidentally hits him in the nose for the first time in years, breaking it, that he notices something strange. How could he not? The battle stops for a moment because his companions start yelling at him, telling him that his face is off limits, and the dealer apologizes.
Dick barely blinks and stops them, then goes to his apartment to clean up the blood, the pain not even bothering him at this point. That's why he doesn't understand why not only his team makes a fuss about it the next day, but they even call his siblings to tell them what happened. He's not even that hurt ??????
The only other person who doesn't make a fuss about it is Batman, who has punched Dick in the face enough times to find it odd. Nobody is happy with Batman upon discovering that fact.