Let's face it; not every relationship will last. However, if a child or children are produced, for the sake of the child, you must figure out how to keep in remembrance what you like about that person beyond the bedroom. Co-parenting is where two parents decide that they can't be in a relationship, but they need to be cooperative parents for the child or children that they have. Being cooperative doesn't mean that you agree with everything, but it means that you agree to talk cordially to each other and attempt to make decisions together so that the child[ren] does well.