Blake was the person who helped Gloria get to William's side.
He was the son of a maid, overlooked by the William family. Through the affection he feigned, he gradually made his way to William's side - William was desperate for affection.
William's father was a notorious womanizer, flirting around everywhere, and his foolish mother, in order to get her husband back, often deliberately hurt William, forcing her husband to rush back in a panic.
The most intense time was when she immolated herself with William.
The result was that she died, but William survived because he received timely help.
The butler said that amidst the raging flames, William's mother was still choking him, asking him why he was so useless, why he hadn't brought his father back.
All these factors led to William's inherent lack of love.
But lacking love did not mean being unguarded.