And Michelle recently took to TikTok to reveal that she and Jack are now living together.
Over footage of herself goofing off with Jack and drinking wine, Michelle wrote, "How long were y'all dating before you decided to move in together?"
And Jack mouthed the following response: "I would say probably four minutes."
Alongside the TikTok video, Michelle captioned it, "Roomie adventures!"
Michelle fell for Jack after her broken engagement to Nayte Olukoya.
Michelle and Nayte announced they had called off their engagement and split in June 2022, and then the Season 18 The Bachelorette star publicly revealed the identity of her new boyfriend in late October 2023 by writing, "Hit the Jackpot with you."
Michelle took Jack to Gerry Turner and Theresa Nist's The Golden Wedding as her date earlier this month, and the pair spoke about how they met during the January 5 episode of "The Ben and Ashley I: Almost Famous Podcast."
Jack, 26, shared with Ben and his guest co-host Trista Rehn, "[Michelle] has a good friend, and her friend has a little brother, who I know, and her friend's little brother posted Michelle in his [Instagram] Story and so I kind of just hit him up a couple times, like, 'Hey man, when are you going to introduce me to Michelle?'"
Jack admitted he persistently asked this "little brother" for an introduction.
"I was like, 'I really want to meet her. She's beautiful.' And he was like, 'You know what? Actually, I think that could be a good thing. I think you guys would be really cool and vibe together.' And so, the next night, I met her," Jack recalled.
Michelle then interjected and noted how she had a similar conversation with this "little brother" at a Minnesota Vikings boot camp practice.
Michelle revealed, "I asked, 'Do you have any single friends?' [I was] thinking that I already knew all of his friends. And he was like, 'Actually, have I ever talked to you about Jack?' I was like, 'Who's Jack?' And so I pulled up his Instagram profile and I loved the fact there were only five pictures."
"I myself got an Instagram only a few years ago, and I was like, 'He's really cute.' I actually started to blush," she elaborated.
"I was like, 'Well, is he a good person? He's good looking, but is he a good person?... What's the catch? What's wrong with him?' That's what I think I asked."
But Michelle recalled, "He was like, 'No, I can't believe I haven't introduced you.' In my world, I thought I brought it up to this person, but [Jack] also did the same thing within, like, 48, hours... It was really weird."
"I didn't know until [Jack and I] had been dating for like two or three weeks, when we actually figured out we had asked about each other within 48 hours," Michelle proudly stated.
And Jack gushed about how he and The Bachelor 26 alum "clicked" right away.
"I think we spent the next four days together. And we were dating by Sunday," Jack said with a laugh.
Michelle explained how she and Jack may be an example of the "invisible string theory" in which it's believed a person has been in the same room with his or her soul mate or life partner multiple times without knowing it.
"We went through breakups at the exact same time. We were both going through devastating breakups and we were both in the same stage of our breakups," Michelle shared.
"We were not ready to meet someone. We'd think we were ready to meet someone, and then we'd take those few steps back. We go to all the same bars. Minnesota is not that big! And the lake he grew up [near], my family fishes on that lake 24/7... [And] I went to a football game that he was playing at, and I hadn't even known, back when I was a teacher."
Now that they're an item in the public eye, Jack said he enjoyed his time at The Golden Wedding and that his first Bachelor-Nation event went pretty smoothly.
Michelle had teased on TikTok in September that she was going on a date and would hopefully end the year "crazy in love."
Michelle then soft launched her new romance via Instagram Stories on October 9 when she uploaded a photo with a man at the Minnesota Vikings vs. Kansas City Chiefs game.
In the selfie, Michelle was smiling big as the unidentified man with black curly hair -- who was wearing a purple Vikings hat -- kissed her on the cheek.
Later that month, Michelle posted a photo of "dinner vibez" with a mystery man.
Jack is Michelle's first serious relationship since calling off her engagement to Nayte, which aired in December 2021.
Nayte had initially planned to move to Minnesota to be with Michelle in March 2022, but he claimed on "The Viall Files" podcast in September 2022 that he decided to stay in Austin, TX, due to back-to-back arguments he and Michelle had in the first few days of January 2022.
The couple allegedly fought constantly, and so Michelle and Nayte's relationship lasted only six months after the finale aired.
"It's been really interesting. Just, you know, you go through something and you think you know someone, and then more recently, [you don't]," Michelle told Celeb Secrets TV in September 2022.
On "The Viall Files" podcast, Nayte recalled there being a sudden and unexpected shift in his relationship with the former The Bachelorette star once they entered the real world, from being blissfully happy to living with tension.
"We started consistently and gradually going downhill, where we were just, like, it wasn't sunshine and rainbows anymore," he claimed.
"I remember crying my heart out to [my mom and stepdad, saying], 'I'm so frustrated and I have no idea what's going on in this relationship.' How can you be so sure about something and then just have it fall apart?"
Nayte said he felt pressure to be perfect since Michelle was a famous face and they were the new hot couple in Bachelor Nation at the time. Nayte also said there were trust issues on his part, citing an incident when Michelle had allegedly suspiciously deleted a DM conversation with a famous male country singer.
The Bachelorette 18 winner also shared how he wants "more of a partner and less of a coach" in his next relationship.
"I miss the Michelle I fell in love with, but I'm not sure I miss the Michelle I broke up with," Nayte told Nick Viall in 2022.
Nayte also raised eyebrows when he moved from Texas to Los Angeles a few weeks after his breakup with Michelle to pursue modeling, Us Weekly reported.
Michelle admitted in February 2023 that Nayte had "stripped" her of her "dream" engagement.
"Honestly, for me, [it's] tainted. Because it was my dream ring," Michelle said of her pear-shaped diamond on Ben and Ashley Iaconetti's podcast.
She added, "I wanted the relationship to work. I was willing to put in work for the relationship. And I had the person take off... Both people have to be capable of [working on the relationship]. And so, for me, it was yeah, I feel like that was literally kind of stripped away from me, so it pisses me off!"
On TikTok, Michelle opened up in early 2023 how she'd like to date a goal-oriented man who plans romantic dates from start to finish and can go with the flow and remain positive in the face of unexpected challenges.
As far as dealbreakers go, Michelle said "complacency" and being "emotionally unavailable." She also said it's unattractive when men get stuck in a pyramid scheme, cannot read a room, give guilt trips, and fail to communicate effectively.