On his season of The Bachelor, Luyendyk popped the question to Becca Kufrin before realizing that runner-up Burnham was the one for him. After calling it quits with Kufrin, he proposed to Burnham on the After the Final Rose special in March.
“I’ve made some bad decisions but the best decision was running back to you,” he told Burnham during the proposal. “I can’t imagine a life without you. … I truly believe you are my soulmate. I’m ready to face this life with you and all that comes with it. The good, and the bad. I love you so much.”
Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Parents newsletter.
“We’re just really happy with each other, and we vibe well together,” Burnham said on The View. “We’re best friends, so we’re just ready for that next step.”
This is not the couple’s first pregnancy announcement. On April Fool’s Day, Luyendyk faced backlash for pretending that Burnham was expecting.
RELATED VIDEO: Arie Luyendyk Jr. and Lauren Burnham Face Backlash Over Pregnancy April Fools’ Day Joke
“I do have sympathy for women struggling from infertility. My April Fools prank was in no way meant to offend women who struggle with that,” he tweeted the following day. “I apologize if you were effected [sic] personally by my post.”
Luyendyk can turn to fellow former Bachelor star Sean Lowe if he needs dad advice. Earlier in November, Lowe offered some tongue-in-cheek marriage tips as he picked on Luyendyk Jr.’s sweet tribute to Burnham.
“I can’t sleep… the house is quiet, you’re next to me,” Luyendyk said to Burnham on Instagram. “I can hear your soft breath and I wonder what you’re dreaming about. I closed my eyes tonight and our future played like a beautiful romance with flashes of our wedding, travels, our children and a house full of friends, family and love.”
“This is bizarre! I wrote something eerily similar to Catherine [Giudici Lowe],” Lowe joked in the comments. “I can’t sleep — think it was the Mexican food. I can hear your loud snores and I wonder if I should put a pillow over your head. I closed my eyes tonight and flashes of an empty house, no kids, no noise, just me and Netflix played out like a beautiful romance.”