Dec. 27 (UPI) -- Arie Luyendyk Jr. "can't wait" to welcome his first child in the spring.
The 37-year-old television personality shared a due date and other details about his unborn child with fiancée Lauren Burnham during a Q&A with fans Wednesday on Instagram Stories.
Luyendyk said Burnham is due to give birth in five months and eight days, which falls in early June. He posted a countdown alongside a black and white photo of Burnham cradling her baby bump.
"@babyluyendyk," the star captioned the post.
The Bachelor alum told fans he and Burnham aren't ashamed to welcome a child before they marry. The couple are keeping their January wedding date.
"We were fairly certain every out there would be able to do the math... plus we aren't ashamed, we are thankful :) And sooooo dang excited," he wrote.
Luyendyk said the most exciting thing about becoming a parent is going through the experience with Burnham.
"So many things but mostly doing this together with her. I can't wait to meet this little person that has already grabbed our hearts," he captioned a photo of Burnham getting an ultrasound.
Luyendyk and Burnham announced Burnham's pregnancy in November.
"Nothing compares, absolutely nothing compares to the moment you find out you're going to be a dad! We cried, we laughed and it really was such a special moment for us, we're so freakin' happy!" Luyendyk said on Instagram.
In addition, Luyendyk told People he and Burnham are "so excited" to become parents.
"It's going to be a whole new chapter in our lives," he said.
Luyendyk proposed to Burnham during The Bachelor Season 22 After the Rose special after ending his engagement to Becca Kufrin. He and Burnham will tie the knot Jan. 12 in Maui, Hawaii.