I thought I'd rent forever, and then I fell in love with a homeowner.Keelan BoothI never thought I'd own a house — and then, I moved in with my homeowner partner.We both had some nerves and insecurities at first, but then had an honest conversation about money.We decided to split most costs and planned what would happen if we were to break up."I never want to own a house."That's what I had said, confidently, for years. After growing up assuming …