Many people think David has different coloured eyes or wears coloured contact lenses, but in fact, his eyes have the same color. As a child, he was in a fight with a friend (George Underwood) over a girl and that friend punched him in the eye so unfortunately that David almost lost his sight and had to undergo a surgery. His sight is unharmed, but his pupil stayed permanently dilated. It took David a few years to overcome the complexes it caused.
What is not often mentioned is that David really deserved it. He knew that George was after that girl for a long time, had to meet her the same day and he also knew that George wanted to ask her out that day. David knowingly lied to the girl, convinced her that George went home already and asked her out as first just because lol
Davids relationship with that girl was very short, but his friendship with George continues, they both are successful artists now and they also worked together