He has to get to know you in order to kill your father. He’s not fond of the idea but after attempting to send Albert and Sebastian to make you swoon he connected the dots.

You were more curious about the blonde haired mathematician rather than those two.

Albert was the first to speak on the matter putting a hand on his brothers shoulder, “Well Liam, looks like it’s up to you.” He chuckled. Watching as William made his way to you.

Once he reached you, he held his hand out and took a small bow. “Pardon the intrusion, but may I have this dance?”

He wasn’t trying to form a bond with you, you were just a pawn to the Lord of Crime.