<prompt> Human: So this is really more of a financial question and felt it belonged here more than relationships, since Im not familiar with this situation.I bought a pre-construction condo in 2015, met my boyfriend a few months later, and the condo wont be ready to move into until late 2018. I have an amazing relationship with my boyfriend and theres definitely a future with him. In his last relationship, he and his girlfriend bought a condo together and she paid him out when they broke up. We both broke off engagements in our last relationships. Ive asked him about our future, and he says hes not in a rush to marry or move in together soon, but he would like to live together when the condo is built.Which brings me to my question, when he moves into my condo, whats the fair thing to do? All my couple-friends either rent together or are married and bought a home together. Do I charge him rent, or let him pay into the mortgage? Ive put 50,000 into the condo so far, and can support the mortgage myself. I feel that owning a home together is a major commitment that should be made as a married couple, so I want to propose that he either pays me rent, or we get married and we split the mortgage costs. I want to pay off my mortgage as quickly as possible, and if we split up as an unmarried couple, I dont know how I would give him back that money if he paid into the mortgage.Is my idea unfair or callous? I dont know how other couples do it.  <response>: Rent. Youre roommates.Dont play house. Everything should be done as if you are roommates. When youre married things change. And if you two cant agree to the terms then you live in your own places. 