Christina, 34, and Tarek, 36, have finalized their divorce, Us Weekly reported.
The HGTV reality stars and house flippers publicly announced their split in December 2016 following seven years of marriage, although they quietly separated in Spring 2016 after a blowout fight that resulted in police visiting their California home.
"Like many couples, we have had challenges in our marriage. We had an unfortunate misunderstanding about six months ago and the police were called to our house in an abundance of caution. There was no violence and no charges were filed," the pair had told People in a statement at the time.
"During the process, we are committed to our kids and being the best parents we can be. We will continue to work through this process civilly and cooperatively, and plan to continue our professional life together."
Tarek then filed for divorce from Christina in January 2017, and she responded in August of last year, citing "irreconcilable differences" as the reason for their breakup.
The former couple share daughter Taylor, 7, and son Brayden, 2, and they've continued to filmFlip or Flop together and make joint appearances despite their failed relationship.
"Going through the divorce and separation was such a horrifying experience. It tests your mental and physical strength and it's just such a painful thing," Tarek told Us in December.
"As time goes on, as you work towards it, you get out of that pain and you see light at the end of the tunnel. You realize that all the things that used to upset you or frustrate you or stressed you out before are so irrelevant. Going through something so traumatic makes you reevaluate life and really who you are and want to be."
Rumors of their romance sparked earlier this month thanks to the pair's activity on social media, as Christina told a friend on Instagram they should go on a "double date" soon with their significant others.
Prior to getting romantically involved with Ant, Christina dated businessman Doug Spedding, but they broke up in October 2017 once he entered rehab to treat his substance abuse issues. She had also been an item with her family's former contractor Gary Anderson.
For his part, Tarek was briefly linked to one of his family's former nannies, Alyssa Logan.