People who look at love in economic terms, using a logic of "profit" and "payment," can easily feel that they have been treated unfairly. They may have already moved to the stage of intimacy, but in their hearts they feel that it is the other person who is getting all the profit while they are making all the payments.
用「賺賠邏輯」看待愛情的人，行動已經走到親密階段，但心態若一味認定這場投資是「你賺我賠」，也就容易產生不平衡心理。