Jessica Graf and Cody Nickson have gotten engaged.

The "Big Brother" houseguests and "The Amazing Race" teammates announced their engagement on social media alongside videos of the special moment.

Nickson proposed to his fellow Graf by surprising her during a hike up Runyon Canyon in Los Angeles where he got down on one knee at the top of the hill.

"I found my true love, I got the ring, only one thing left to do.............. Thank the Lord, thank you to everyone who prayed for us, thank you BB for casting us so we could meet, thank you Joey Hamra @hamradiamonds in NYC for helping me design the perfect ring, thank you Lori for helping keeping it a secret since I'm with Jess every waking moment, thank you to my sisters and mom and dad for making Jess family... we are blessed," Nickson said referencing how they met on "Big Brother" alongside a video of how he planned on running into Graf at the top of the hill to surprise her.

"I said yes! On Tuesday, February 13th my best friend asked me to marry him. He's made my dreams come true every day since we met! I love you + there's no one else in the world for me. You're my person and I thank God for you coming into my life!" Graf said alongside a video which features the proposal taking place.

"I'm a happy happy girl," she continued.

Graf and Nickson first met during Season 19 of "Big Brother" in 2017 before they joined "The Amazing Race" in September.

It will be unveiled during the Season 30 finale of "The Amazing Race" on Feb. 21 if the couple won the show's grand prize of $1 million.