Legal analysis: The question of "should girls repay the mortgage together after marriage" needs to be comprehensively considered based on the property registration name and various factors: 1. If the man pays the down payment to buy a house before marriage, the couple will pay the mortgage after marriage** *Same as loan repayment, if the house is registered in the man’s name, when the property is divided after divorce, the house belongs to the man, and the man needs to compensate the woman for the loan repayment part and the increase in the value of the house; 2. To purchase a house with a mortgage after marriage, the man’s parents provide the down payment , the property rights are registered in the man’s name, and the couple repays the loan together. At the time of divorce, the property is the joint property of the husband and wife, and the down payment is the man's personal property. 3. After marriage, the man contributes money to buy a house with the joint property of the husband and wife. No matter which party is registered in the name, the property belongs to the joint property of the husband and wife. The judge will decide which party owns the house based on the actual situation. The party who obtains the property needs to The other party compensates.

Legal basis: "Interpretation of the Supreme People's Court on the Application of the Marriage and Family Section of the "People's Republic of China and Civil Code" Article 78: One spouse signs a real estate sales contract before marriage and pays the down payment with personal property If the down payment is made and a loan is taken from a bank, and the joint property of the couple is used to repay the loan after marriage, and the real estate is registered in the name of the party who paid the down payment, the real estate will be handled by agreement between the parties upon divorce. If an agreement cannot be reached in accordance with the provisions of the preceding paragraph, the people's court may rule that the real estate belongs to the party who registered it, and the unpaid loan shall be the personal debt of the party who registered the real estate. For the amount paid by both parties to repay the loan after marriage and the corresponding increase in property value, upon divorce, the party registering the real estate shall compensate the other party in accordance with the principles stipulated in paragraph 1 of Article 1087 of the Civil Code. .