Tyler, 29, and Kristin, 35, kicked off 2023 together in Nashville, TN, and many fans noticed they looked close and flirty in the background of social-media posts that had been uploaded on Sunday, January 1.
Bachelor Nation couple Kaitlyn and Jason posted the videos, one of which showed Tyler pulling the former Very Cavallari into his body for a tight hug on the dance floor.
Once Kristin reached Tyler's arms, she wrapped her arms around his neck. The video was later reposted by fans on social media.
Jason also posted a since-expired video on Instagram Stories in which he had asked Tyler if he's single.
Tyler dodged the question and attempted to flip the script on Jason by asking him about his relationship with Kaitlyn, but then Tyler finally confirmed, "Still single, yeah."
In addition, Kaitlyn -- who got engaged to Jason in May 2021 -- shared a funny video of party guests -- including Tyler and Kristin -- insisting they were going to get the most drunk at the New Year's Eve bash.
This isn't the first time Tyler and Kristin have sparked romance rumors.
Back in April 2022, Tyler and The Hills alum were spotted making out while posing for a western-themed photo shoot promoting Kristin's clothing and jewelry line, Uncommon James.
But Kristin admitted the photo shoot was a publicity stunt on "The Bellas Podcast." Kristin actually acknowledged it was her plan all along to get fans gossiping about the reality TV stars' relationship status.
"I mean, that's why I hired the guy, to get press," Kristin confessed to co-hosts Brie Bella and Nikki Bella on the April 27 episode of the podcast.
"It worked," she added. "I was like, 'Check that box.'"
"He's honestly the nicest human being on the planet," Kristin gushed. "I mean, he is like such a love. I have nothing but good things to say about him."
But Kristin, who also admitted Tyler is "a very good kisser," said she and the former general contractor had strictly a professional and platonic relationship.
The Balancing in Heels author is still in the middle of her divorce from football player Jay Cutler and it has yet to be finalized. The estranged spouses share three children together: sons Camden, 10, and Jaxon, 8, as well as daughter Saylor, 7.
Kristin told Entertainment Tonight last year that she was "open to dating" again and wants a confident and successful man "who is just really comfortable in their own skin" and can be her "rock" and "doesn't take life so seriously."
"I totally would [get married again]," Kristin, who found fame when she starred on Laguna Beach, said in Spring 2022.
"I want to because I think this time around it would be very different, and that excites me."
Following her split from Jay in April 2020, Kristin was linked to comedian Jeff Dye and singer Chase Rice.
Meanwhile, Tyler -- who finished as the runner-up on Fox's The Real Dirty Dancing -- was allegedly dumped by model Camila Kendra in August 2021 after eight months of dating.
Camila appeared to break up with Tyler shortly after he publicly announced that he was "very in love" with her.
Tyler previously said on The Ellen DeGeneres Show that he's looking for "someone whose smile is contagious" and "can light up a room."
Tyler also shared that it's important how his significant other treats "the people around them."
The model wants his future girlfriend to "respect the server, the parents, their friends," adding, "That's big for me."
"She's got to be beautiful too," Tyler confessed.
In February 2022, Tyler told E!'s Daily Pop during a joint appearance with Kristin that he's also searching for a woman who is "hungry and ambitious" as well as "family oriented" and "ready for an adventure."
Hannah broke up with Jed shortly after they got engaged and attempted to reconnect with Tyler during her After the Final Rose special, which aired in July 2019.
Hannah recalled receiving mixed signals and navigating a confusing relationship with Tyler from 2019-2020 in her first memoir, God Bless This Mess: Learning to Live and Love Through Life's Best (and Worst) Moments, which was released in November 2021.
Not only did Hannah write that she felt like Tyler's "backup player who never got to play in the game," but she also said their relationship "wasn't some game" to her and he "broke" her heart when he began dating supermodel Gigi Hadid shortly after The Bachelorette 15 wrapped on TV.
Hannah and Tyler never dated again after the show, and they claim they never even kissed while quarantining with each other for several weeks amid the coronavirus pandemic in 2020.
And Hannah claimed Tyler's last text to her was, "Well... if you rock with me, you rock with me. If you don't, you don't."
But Tyler noted on "The Bellas Podcast" once Hannah's book was released, "I've got receipts, too!"