Whatever their age, children find the break up or separation of their parents to be a difficult time emotionally. Many aspects of their lives will have changed, whether it’s where they live, seeing one parent much less or emotional difficulties brought about by upheaval. The speed at which they adapt and recover will very much depend on how the situation is dealt with.
Children can be remarkably resilient and adapt very well to new situations, but as parents who have decided to split up, you need to make this transition as easy for the children as possible. Subtle emotional issues like loyalty confusion might not be easy to predict or to spot particularly if you, as a parent, are very focused on your own feelings of loss from the separation.