Daniele Donato is going to be a first-time mom.

The 31-year-old "Big Brother" alum announced in an Instagram post Wednesday on Valentine's Day that she's pregnant and expecting a baby with fellow Season 13 houseguest Dominic Briones in August.

"Happy Valentine's Day!!" Donato captioned a photo of a sonogram, baby booties, roses and a planner opened to August 2018.

"Hoping this year everyone's hearts are as full as mine and @dominic.philip's hearts.. and my belly," she added. "Baby Briones coming this August."

Briones shared the same picture and a sweet message on his own account.

"We couldn't be happier," he wrote. "First God blesses me with @its_danibri who I clearly don't deserve. Now I'm blessed again with #BabyBriones on the way. Today I hope you all are filled with as much love as I have in my heart."

Donato and Briones started dating after meeting on "Big Brother" Season 13.

The couple married in January 2013, and welcomed a "little spotted baby" -- their dalmatian puppy, Kenya -- in December.

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"You guys! Today is the day!! Our little spotted baby comes home," Donato wrote at the time.

"Everyone welcome Kenya as the newest member of our little family. Obviously you need to follow her on Instagram for daily cuteness. @kenyathedal."