What is "it" that says you have to file three tax returns? What does "it" say exactly, word for word?
You and your partner each have to file a separate federal tax return because the federal government does not recognize the RDP. As far as the IRS is concerned you are two single people. You and your partner can file one joint California state tax return together if you choose to.
For more information see the FAQ that DoninGA referenced above.
