You should remain friendly with former significant others.
Chuck divorces his wife, with whom he has a child, and feels very hurt by the whole situation.
Chuck wants to deal with the pain that he feels.
Chuck works to get over his bitterness and get on to good terms with his ex-wife.
Chuck treats his ex-wife poorly and refuses to give her financial support for the child.
Chuck and his ex-wife kindly share custody of their child, which greatly improves the child's quality of life.
Chuck's child sees the animosity between Chuck and his wife and becomes emotionally scarred for life.