“Secrets finally out, we have a bunny in the oven! @laurenburnham91,” he wrote on social media, alongside an image of a woman, who appeared to be Burnham, clutching what looked like a baby bump.
After over an hour, Luyendyk Jr. responded to his own photo, writing, “APRIL FOOLS!”
However, some on social media quickly spoke up to tell Luyendyk Jr. that many don’t find jokes about pregnancy funny.
“You both are disgusting. As someone who struggles with fertility and would love nothing more than to have a baby this is so offensive,” wrote one social media user.
RELATED VIDEO: Lauren Burnham Defends Arie Luyendyk’s Change of Heart: “He Won’t Change His Mind Again”
Another wrote, “Come on. be better than that. it’s not a joke for many struggling families to get pregnant, it’s extremely expensive and it’s heartbreaking. I wish nothing but the best for Arie and Lauren but this is not funny, it’s cruel.”
According to the Centers for Disease Control and Prevention, 12.1% percent of women between the ages of 15 to 44 struggle with infertility.
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The reality star appeared to address the backlash, sharing a photo of a recipe on his Instagram story and writing, “Sorry if you were offended, but we really are making a Dutch Baby.”
While Luyendyk Jr. and Burnham — who got engaged after the Bachelor broke off his engagement to Becca Kufrin — haven’t started their family quite yet, the pair have both spoken about how much they’re looking forward to having children together.
“We’re both very excited about marriage and starting a family,” Burnham previously told PEOPLE.
In fact, Luyendyk Jr. says he wants two to four kids.
“If we get lucky, maybe we’d have twins!” he added.