State of Illinois }. For office use only.We have lived together for at least six months. 2. We are not married to anyone else nor have another Domestic Partner. 3. Complete the Domestic Partnership Affidavit: At the Clerk's office, you will fill out and sign a Domestic Partnership Affidavit. The affidavit requires essential information, including both partners' full names, addresses, birthdates, and the relationship's start date. The registration process is simple. There is usually an application to fill out which you can get from your city or county clerk's office. WE FURTHER DECLARE: • We are engaged in a committed relationship and intend to remain together indefinitely. Age, complete and sign the required Domestic Partnership Affidavit before a.