Diana & Ronan
Ronan was lucky that Diana was graceful and had quick reflexes, he really was, because that fact meant she was able to not take him down in a heap when they collided. Unfortunately, it still meant she fell. "What the hell?" she demanded, looking up at him from the floor. "Oh, my God, are you an idiot or something?"
A pause.
"And which one are you? You and your stupid brother look way too much alike."
It was easy enough to tell them apart, if you actually stopped to pay attention to them. But she didn't care that much.