<prompt> Human: Hello everybody, hoping you all could help my SO and I out. So my father in law is apparently trying to buy his house that he has been renting for several years. What he is telling us is that he needs my SOs pay stubs, W2s, and tax returns from the past three years in order to prove that she lives with him she doesnt, but has in the past. According to him, this will give him a significantly lower interest rate and down payment. He says she will have to sign some things, but that the house will NOT be tied to her in any way. We thought it sounded like he wants her to co-sign with him on the house. In the past he has had some financial troubles, and is not very good at saving money. He also has a history of holding things over her head the car he bought for her but is in his name, for example in order to get what he wants. He doesnt seem to want to give us alot of details on what this entire process entails, and it all seems a little fishy. What we are trying to figure out is what exactly her FIL is trying to do here, and whether or not my SO be tied to the house in ANY way. There is a possibility he could miss a payment or two, and we dont want that on her credit score. Any help would be appreciated, thanks.  <response>: he needs my SOs pay stubs, W2s, and tax returns from the past three yearsYou dont need these things for someone who is not tied in any way. Theres a lot he isnt telling you. 