It's possible to have relationships between models stored in different databases in Django?

I'm currently working on a project where I handle both public and private information, both stored as different models in a common database.

I would like to split this database in two, one with the private model objects and another one with the public ones.

The thing is, both this models have a ForeignKey relationship with each other, and I've found conflicting answers over the internet about if this relationships can work even if the models are in two different databases.

So, is this possible? Is there a better approach for doing this?

Just to clarify why I want to do this, I want the project to be open source, therefore the public database should be public, but the sensitive information (users and passwords) should be kept private.