Co-parenting is when the responsibility of raising the child is shared between the biological mother and father. Whenever possible this is a wonderful option for the child even if the couple does not decide to stay together. The parenting plan will include a schedule that is detailed in writing and should also include child support commitments. It is best to have these documents legally binding.
If your partner is unsafe or unhealthy, then seek the help and assistance to ensure your health and safety. You may need to look towards parenting without them. However, if possible, including them in a healthy respectful way will be rewarding for the child as well as each parent. There are many resources, classes, blogs, and tips on how to successfully co-parent.