Who is BU here? We have a houseful of family today. DD went to the shops and offered to buy everyone a packet of sweets. Person A asked for a small chocolate bar, Person B said they didn’t want anything. DD got home and handed out the sweets. Person B asked Person A if they could break their bar of chocolate into 2 and give them a piece. Person A said they would like to eat this particular bar themselves, but there was more chocolate in the cupboard. Person B said they wanted a piece of Person A’s chocolate in particular. Person B was told they could have ordered their own bar if they wanted one, but Person B wanted a piece of Person A’s chocolate because they didn’t want a whole bar. Words were exchanged on both sides. Should Person A have shared, or should Person B have ordered their own bar?