My SO and I are living together in Texas. We are living on our respective SS checks. I am 65, and retired. He is 55 and disabled and gets SSD. We have never signed anything or entered into any written contract stating that we wish to have a common law marriage. We do live together, and plan on living together forever. Some people assume we are married, but we have never claimed to be married. Could this situation end up as a common law marriage, requiring us to file income taxes together, or get a divorce if we decide to separate?