Creating a ManyToMany relationship between two models
You might be able to use sqlite-net-extensions, it has a ManyToMany attribute that seems perfect for your needs. This is an example of its use from their website.
public class Student{ [PrimaryKey, AutoIncrement] public int StudentId { get; set; } public string Name { get; set; } public int Age { get; set; } [ManyToMany(typeof(StudentsGroups))] public List<Group> Groups { get; set; } public int TutorId { get; set; } [ManyToOne("TutorId")] // Foreign key may be specified in the relationship public Teacher Tutor { get; set; }}public class Group{ [PrimaryKey, AutoIncrement] public int Id { get; set; } public string GroupName { get; set; } [ForeignKey(typeof(Teacher))] public int TeacherId { get; set; } [ManyToOne] public Teacher Teacher { get; set; } [ManyToMany(typeof(StudentsGroups))] public List<Student> Students { get; set; } }public class StudentGroups{ [ForeignKey(typeof(Student))] public int StudentId { get; set; } [ForeignKey(typeof(Group))] public int GroupId { get; set; }}