All three are sitting across the backseat. Jack is in the middle, visibly depressed. Louisa is drinking cola.
Scott: Can I have a bit?
Louisa: Sure
Louisa passes the bottle to Jack, who passes it to Scott
Scott: Thanks
Louisa: No problem
Scott: Sugar-free? Why not cut my heart out while you’re at it?
Louisa: Believe me, it’s tempting. Do you want some or not?
Scott: Forget it
Scott passes the bottle back to Jack, who this time clings to it with longing
Jack: Does Lizzie smell of flowers, or do flowers smell of Lizzie?