Washington State does not recognize common law marriage. While some states allow couples to establish a legal marriage by living together and presenting themselves as married, Washington does not provide this option under its law. Therefore, there is no specific Washington Common Law Spouse or Marriage Declaration or Affidavit. However, it's essential to clarify the absence of common law marriage in Washington State to prevent misunderstandings or confusion. Couples need to be aware that living together or creating an informal marital arrangement does not confer any legal marital rights or obligations in Washington. Despite the absence of a specific declaration or affidavit related to common law marriage, there are alternative legal mechanisms available to provide similar protections for unmarried couples in Washington. These include: 1. Cohabitation Agreements: Unmarried couples can consider creating a legally binding agreement, commonly known as a "Cohabitation Agreement." This document allows couples to establish their legal rights and responsibilities regarding property division, financial support, and other matters during their cohabitation and in the event of a separation. 2. Domestic Partnership: Same-sex couples in Washington State can register as domestic partners, which provides them with many of the same legal benefits and protections as marriage. In addition, opposite-sex couples aged 62 or older are eligible for domestic partnerships as well. It's important to consult with an attorney to understand the legal options available and to draft appropriate agreements or seek legal protections tailored to your specific situation.