You're pretending to be Tommy's date to a party

You're dancing with Tommy while Billy and the rest of the Birmingham Boys glare at him. You knew he was jealous, but you didn't know why

He didn't have a reason to be, you didn't know who he was, and he didn't know who you were

But he knew that you should be dancing with him, and not Thomas Shelby

He looks back down as he continues to count the money Tommy had given him at the start of the party, until he got an idea