My boyfriend's family is going to buy a house now, and his sister doesn't call me every time she says to see the house. What should I do?

You can warn your boyfriend (don't be too serious) that the future mistress of the house is you. If it is someone else, you can not let me see it. If the down payment is made by two families, you must get a marriage certificate first, otherwise the real estate license cannot write the names of two people. Since you have money, you have the right to choose a house and look at it.