Do I have to marry my fiancee once they come to the United States, may I bring multiple fiancées to the United States, or may I bring the same fiancee to the United States multiple times?
No. You are not required to marry your fiancé once they come to the United States. A fiancé Visa gives you permission to marry should you so desire. If you decide not to marry your fiancé, the only requirement is that they must leave the United States before the Visa expires. However, if you plan to remain together, you must marry within (90) days of their arrival so you can avoid issues with adjusting their status as your spouse.