More Shocking Duggar Secrets Revealed! Cousin Amy's Fiance Dillon King Arrested For DWI TWICE In Two Years

In less than a month, a gleeful Amy Duggar will wed her boyfriend of about one year, Dillon King.

But the bubbly former 19 Kids And Counting star and devout Christian, 28, may not know that her printing firm owner fiancé has a dark history with the law.

RadarOnline.com can exclusively reveal that King, 27, was arrested for driving while intoxicated TWICE in his native Arkansas within two years.

He was first arrested for DWI in 2011, and then caught again in 2013, an Arkansas law enforcement source tells RadarOnline.com.

According to state law, he likely served jail time after his second offense.

In a spring interview with RadarOnline.com, Amy said her man "knows everything" about her life, and called him her "rock."

As RadarOnline.com previously reported, the aspiring country singer and King, who popped the question in July, will tie the knot on September 6, 2015, in Bentonville, 40 minutes away from her hometown, Fayetteville.

The entire Duggar family, including Jim Bob, Michelle, and their 19 children, is expected to attend the nuptials.

When reached by RadarOnline.com about King's DWIs, Duggar told RadarOnline.com "No comment."