There is case law indicating that fraud is a basis for seeking an annulment in Missouri, but there's not a great deal of guidance about the type of situation you're describing. As you're already consulting lawyers about divorce, I suggest discussing with them whether they believe you might qualify for an annulment, as well as if it's possible to make the request in the alternate (ask the court to grant an annulment but, if the court declines, to have it grant a divorce in the same action).

