Washington State...My girlfriend and I are splitting the sheets...we have been together just over 4 years now. Living together in a lease option house that has an expired contract. I am redoing the contract in my name only. She seems to think she is entitled to half of what I own. I call BS. What is the common law in my state? Do we even have one? She says she is not leaving HER house, even though she cannot afford, or have her name on the large down payment. Any help would be GREATLY appreciated!