First, boyfriends are not protected by marriage law. So you can write the names of two people in the house you are buying now, and you can repay it together, or you can choose one party to repay it on your behalf, but you must issue a written certificate and other related materials.
Second, whatever routine you do before marriage is voluntary, so even if you break up, the law will only adjust it. After you break up, the house will be valued as a non-supporting house according to who pays the mortgage. Moreover, if one party does not participate in the mortgage repayment or gives up the mortgage repayment, even if there is a name on the house, your rights will be removed, because there is a receipt when repaying, which will be judged according to the signatory.
Suggestion: Don't buy things with high material value such as houses and cars before marriage, because nowadays people are easy to get married and divorce. Some couples are lovers today and strangers tomorrow, so it's not worthwhile to get married, let alone not be in the same place. There are many problems and the distance is not beautiful, but the third party is derailed or derailed. Do you believe it? This is the result of many facts. How much confidence do you have in your partner? On the contrary, how much confidence does your partner have in you?