As the saying goes, "filial piety is the first virtue". Boyfriend wants to lend money to his parents to buy a house, which shows that he is a filial, responsible and responsible person. Such talents deserve your life.
If a boyfriend wants to lend money to his parents to buy a house, he has to bear certain economic pressure. Appropriate pressure can stimulate people's potential, stimulate people's fighting spirit, make him a person who is not afraid of hardship and involvement for the future, and bring you a better tomorrow.
I think you should support and encourage such a boyfriend. You are only his girlfriend now, and your economy should be independent. What's your position against it? If you object, it will appear that you are stingy and unfilial, and it will cause your boyfriend and his family to have opinions on you, and even affect your's feelings.
Even if you were married, I wouldn't advise you to object. If your boyfriend is an only child, then the house will be yours in the future, and you can make an investment. After all, the appreciation rate of real estate is still faster than other assets. If your boyfriend is not an only child, you can ask the house to write your name, or make a will to prove the house your boyfriend bought with a loan to avoid unnecessary disputes in the future.
If we only consider that buying a house now will cause great economic pressure, again, appropriate pressure will become the driving force. As long as you work hard with your boyfriend, the economic situation will gradually improve. Filial piety is the traditional virtue of our Chinese nation. Don't lose a person you can trust and rely on because of temporary selfishness.