<prompt> Human: Sister is less than a year into a relationship, and theyre currently looking to buy house together. On a surface level, it sort of makes sense: shes just starting out in her career making decent money but doesnt have 20 saved for a down payment. Mortgage would be less than what she pays in rent, but in order for her to use the money BF is offering to pay for the down payment, the lender is requiring the he be listed on the mortgage. How bad could this potentially get for her if the relationship goes south? In the end, shes an adult and can make her own decisions, I just want her to at least have some advice. Thanks, reddit.  <response>: What happens when they break up?She should save up enough for a down payment and buy it herself. 