The two were introduced after Jill's father met Derick on a Nepalese religious mission and thought the pair would hit it off. They then communicated via Skype and text messages before they finally met in person.
"We got to know each other in the first few months pretty quickly," Jill told People. "I was in love with someone I had never met in person, but we really knew each other well."
Jill follows in the footsteps of her younger sister, Jessa, 20, who entered into a courtship with Ben Seewald, 18, last September. At that time, their father Jim Bob explained courtship as, "getting to know each other in a group setting, both families spending time together and the couple setting goals together to determine if they are meant to marry."
Best wishes to the new couple!