An annulment is another way to end a marriage. It differs from a divorce because an annulment means the marriage was never valid. There are limited reasons for getting an annulment in Nebraska. An annulment may be granted if the marriage was against the law (i.e. if siblings were married); if one of the spouses was impotent, mentally ill, or mentally handicapped at the time of the marriage; if a spouse had another living spouse at the time of the marriage; or if the marriage was consented to under force or fraud.