You shouldn't let your partner comment on your eating habits.
John's eating a snack of potato chips when his wife Sally tells him that he's being unhealthy by eating the chips.
John wants to respond to Sally's statement.
John tells Sally that he's eating a small portion, and she should mind her own business.
John tells Sally that he's sorry for eating food that she has deemed unnaceptable and puts the chips away.
Sally is taken aback but eventually realizes she has gained respect for John for his ability to tell her his real feelings.
While initially happy, Sally begins to think less of John for being such a pushover.