Keep in mind that the goal is to show that you have discussed and invested in your relationship and future marriage.
USCIS has created a list of requirements you must meet before applying for a K-1 fiancé visa.
The United States Engagement Visa is known as the K-1 Fiancé Visa.
The time it will take for your application to process may vary. On average, it takes about 6 months.
The most basic answer is “be honest.” Full disclosure is the best policy when dealing with the United States government.