Anytime we lose a loved one, grief will be a naturally occurring experience, regardless of whether the person is saved or not. Even when people are saved, we still grieve the reality that they are no longer with us, at least for the present time. The difference in losing a saved loved one and an unsaved love one has more to do with our hope of seeing them again in eternity. In 1 Thessalonians 4:13 Paul wrote that we should not 'sorrow as others who have no hope.' In all deaths we sorrow, but when we know that there is no hope of ever seeing that person in eternity, we grieve not for the temporary loss but for a loss that is permanent. In these cases the grieving process will be the same, but it may be more intense and may last longer. We hope this helps you.