def get_relationship(self, user_id):
return self._relationships.get(user_id)<EOL>
Retrieves the :class:`Relationship` if applicable.

        .. note::

            This only applies to non-bot accounts.

        Parameters
        -----------
        user_id: :class:`int`
            The user ID to check if we have a relationship with them.

        Returns
        --------
        Optional[:class:`Relationship`]
            The relationship if available or ``None``