<prompt> Human: My girlfriend and I have been weighing buying a house together. However, I have the entire downpayment which I want to protect in the case the relationship goes sour. Can we both be on the mortgage and in the event the relationship, my downpayment be protected?Im in Ontario, Canada. The reason for us to both be on the mortgage is she can get a favourable rate through work. While I have the downpayment and good credit. I am able to go and get the mortgage myself based upon my savings, income, and credit history. However, shes stated her preference to be on the mortgage while agreeing to protect my downpayment. Edit:Some financial info:Me:Late 20sSalary: 55000Downpayment: 65000 worked a lot through school and lived at home until a couple years agoEmergency fund: 5500Personal and work retirement funds that wont be touched. No debtCredit score: 780Her:Mid 20sSalary: 60000Downpayment: 0Debt: 32000 all is student debt except about 1500 in consumer debtCredit score: not checkedDefined benefit work pension  <response>: Dont do it unless you are married 