"When I met you last time, I saw what you're like and I knew that you're deserving to be my brother's wife."
As she heard that, Lucy frowned and asked:
"I thought it was the first time you've met us."
The Joker burst out in laughter and retorted:
"Naaah I tricked you two. I already knew Arthur but it was the first time I saw the old you."
He paused for a second before resuming the long story:
"It not long after we became brothers that we reached the underground city."
Still standing behind the door, Angelina was listening to the narrating Joker and becoming more and more dumbfounded. To think that Arthur was the Joker's brother, if her mother were to hear of this, she would certainly flip out. In terms of status, Arthur is her son-in-law but also the brother of her teacher, which makes him someone she should treat with respect rather than kill him at their first meeting.
****