On nebenan.de, you can only register as an individual using your real name. Families can indicate in their profile whether they have children. Couples with individual profiles can list each other as partners and change their relationship status to "in a relationship." A joint profile is not possible.
Currently, you can only register on nebenan.de as an individual using your real first and last name.
For families, you have the option in your profile to indicate whether you have children.
For couples, if you both have individual profiles, you can list each other as partners in your profile under "You go through life with." Simply update your relationship status to "in a relationship" as well.
Otherwise, let us know the name of the person you want to use on nebenan.de, and for example, upload a photo of you together as your profile picture.