Crying doesn't always mean you're sad. Smiling doesn't always mean you're happy. This is an example of how complex emotions are for humans themselves.
No one can understand what emotions are until they experience them firsthand and understand them over time.
Therefore, when someone experiences a new emotion, it must be very confusing for them.
That happened to William over the past few years since he started opening his heart.
He was like a newborn baby, even though he was already at an age where he couldn't be considered a baby anymore.
He was late in developing as a human compared to other children, and it was also because of himself, but that doesn't mean it was his own fault, because he was still a child and didn't understand much at the time.
