A lot of us come into relationships with children. Some of them live with us, some don't. All our circumstances are different concerning this. Some of us have great co-parent, some have none. But, some of us have the co-parent from hell! Saying this, we have different relationship with the other parent and understandings when it comes to new partners entering our lives. So, my question is, and I know it will vary considerably...

How do we approach discipline between your partner, your child, and your co-parent?