In New Hampshire, a court determines the validity of a prenuptial agreement by looking to "fairness" both at the time of execution and the time of proposed enforcement. You and your spouse sign a prenuptial agreement. You enter into a marriage or civil union. The marriage or civil union breaks down. You're covered right? Wrong. When it comes time to seek enforcement of the prenuptial agreement, a court will take a "second look" at the prenuptial agreement in order to determine if conditions have changed so dramatically since it was signed as to make it unconscionable to enforce now.