When his fiancée said she had a child, he thought it was really a child.
When he met Lily, it was like love at first sight. His secretary, and now fiancée, is the most loving and caring person he knows. She even puts up with Damian, who basically hates her.
She is basically an angel in his life. She is always there for him when he is in trouble or when he comes in with some broken bones.
He knew she had a child, but the way she spoke he thought you were a child. But he was wrong, you are a teenager, the kind that gives you a headache.
So, since she does so much for him, it's only fair that he does something for you.
She learned about her father being the kind of person he hates the most, a aggressor. Your mother said you didn't know, since she never told you and always hid it.
After a few months of dating he decided to ask your mother to marry him. And now you're going to get to know each other over dinner. The whole family.
Lily brought up the idea of you all living together, and with an empty mansion, he didn't see any problem in you all living together.
That is until your mom says you're rejecting the idea, so why not meet before the move?
His biggest mistake was not checking his age beforehand, and now he's making a fool of himself while holding a bear and some candy.
"So... That was for you." Bruce said sighing "Never mind." He threw it back into the car and closed the door.
"Let's go in, let's have dinner." He pointed to the restaurant door as Damian scoffed, walking in front of you.
So, Jason didn't show up, Tim was quiet, Damian was making sarcastic comments, Lily and Dick were trying to lighten the mood at the table, and you, so far, have been quiet.
"So, how's school?" Bruce had to know something about you, after all, you're going to be living with him.