Big Brother alum Memphis Garrett has revealed when he fell for Christmas Abbott in the Big Brother house and realized they couldn't just stay friends forever.

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"I knew around Week 6 in the house that there was something about her I would not be able to ignore," Memphis, 37, told Us Weekly.

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But Memphis and Christmas were both in relationships with other people during their time on Big Brother: All-Stars, so neither person acted on the romantic feelings they might have had for each other during the game.

"We did not kiss in the Big Brother house, and we were never in the jury house together," Memphis confirmed, adding that when they joked about "laundry time" on the show it just meant their "live feeds were off."

Christmas and Memphis announced they're in a relationship on Tuesday night via Instagram by posting cute photos of each other.

Memphis told Us that the couple didn't begin their relationship until after the show and they just made their status official "this past week," although they've clearly been spending a lot of time together.

"We both had to respectfully take care of situations we were in and needed some time," Memphis explained. "That time apart made me realize I couldn't be without her."

Memphis added, "Christmas and I have a relationship that was built from the inside out. Her contagious smile and her unapologetic laugh is what I fell for, and it just so happens she is smoking hot."

When Christmas announced her new romance with Memphis, she wrote on Instagram, "Love is not found, it's built."

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And Memphis shared, "Sometime people come into your life and you know they just belong. We tried to fight it but fate had its own plan. Excited for the future."

Christmas and Memphis both competed on Big Brother: All-Stars, the show's 22nd season, which wrapped in late October.

Christmas and Memphis were allies in the house as members of The Committee alliance and became best friends while playing the game, but their flirtatious tendencies had fans speculating they may have had feelings for each other all along.

"We both were dating people while we were in the house, but each of our relationships were only a few months starting in March of this year," Christmas explained to Us. "Nothing long-term for each of us. No one was inappropriate."

Christmas shared with E! News in a separate interview, "It's hard to pinpoint exactly when I felt my feelings for Memphis grow from just a friendship to more because I believe that our friendship IS what's more."

Christmas said all of their fellow Big Brother houseguests are "all very excited" they finally got together.

"I really didn't think that it would happen for me," Christmas told E! News.

"I wasn't looking for a relationship, I was there to WIN. It's so wild to have this experience because we reverse engineered how society promotes falling in love. Memphis and I got to know one another through real conversations, building trust with each other and not starting with a physical connection. That's a rare thing!"

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And Memphis echoed Christmas' sentiment, adding, "Never in my mind would I ever think I would find love thanks to the Big Brother house, but sometimes fate has other plans."

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Dating speculation began to swirl when Christmas and Memphis were photographed hanging out at a Florida bar together in November and the image circulated on social media.

Prior to Christmas and Memphis sparking a flame, Memphis was reportedly dating Dominique Scalise.

Both individuals are parents, as Christmas shares her two-year-old son Loyal with ex Benjamin Bunn and Memphis shares his five-year-old son River with his ex-wife Ashley.

The couple reportedly have yet to introduce each other to the children, but Christmas said they've bonded over being single parents.

Christmas and Memphis finished Big Brother: All-Stars in fourth and fifth place, respectively, and both of them ultimately voted for Cody Calafiore to win the game over runner-up Enzo Palumbo.

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