April Love Geary is about to have even more *love* in her life! The model announced Thursday, August 17 that she’s pregnant and expecting her first child with her love of three years, singer Robin Thicke.

“Robin and I are very excited to share with you all that we’re having a baby,” she captioned a photo of her ultrasound on Instagram. She went on to reveal that her due date is March 1, which just happens to be the birthday of Thicke’s late father, Alan Thicke.

She also posted a picture of herself rocking a bikini and cradling her stomach. “Happy in Hawaii with my lil peanut,” she wrote alongside the ‘gram.

The little one will be Geary’s first child and Thicke’s second. He and ex-wife Paula Patton also have a son, Julian.

Geary and the “Blurred Lines” singer first started dating in 2014, after Thicke and Patton ended their nearly 10-year marriage. At 40, he’s 18 years older than Geary, which has become a running joke for the couple on social media. Earlier this year, on Valentine’s Day, she posted a pic of them in California’s wine country, joking in the caption, “Robin Thicke & his ‘much younger girlfriend’ enjoying Napa Valley for Valentine’s Day.”

She called out the haters in a separate post in April, writing on Instagram, “We’re out here LIVING while most of y’all are still bothered by an age gap.”

Congratulations to the happy couple!

(Photo via Jerod Harris/Getty Images for National Geographic Channel)