You should be grateful to people that treat you well.
Dave's wife Sandy comes home and surprises Dave with a beautiful watch she bought him.
Dave wants to respond to the gift.
Dave tells his wife that he is so thankful she did that for him and that he loves her so much.
Dave tells his wife that he already has a watch, so she shouldn't have spent their money on the new one.
Sandy is delighted that Dave loves the gift and that he's being so loving towards her.
Sandy is sad that Dave doesn't like the gift and that he thinks she made a mistake.