"Tommy, we've got some news to share! Are we allowed to share it?" Becca asked, according to BachelorNation.com.
Thomas exclaimed in response, "We got the wedding venue, we got the date!"
Becca went on to share, "We got our dream wedding venue that we wanted! It seems too good to be true and I don't want to jinx it, so I'm going to knock on some wood, but ahhh, it's happening!"
Becca and Thomas, who met on Bachelor in Paradise's seventh season last summer, previously said they'd like to get married in San Diego, CA, where they bought a home and currently live with their dogs.
The pair had been hoping for Fall 2023, but neither Becca or Thomas revealed their wedding date via Instagram Stories.
"They know me from The Bachelor, getting proposed to multiple times and not seeing that full story come together. I understand why people would want to maybe see that at some point. But if it happens, it happens."
She added, "If it can be done tastefully and respectfully and true to who we are, maybe. I'm not saying yes. I'm not saying no."
Becca was previously engaged to Arie Luyendyk Jr., with whom she fell in love on The Bachelor's 22nd season.
After Arie broke up with Becca for his runner-up, his current wife Lauren Burnham, Becca starred on The Bachelorette's fourteenth edition in 2018 and got engaged to Garrett Yrigoyen. However, that relationship ended in Summer 2020, with an official breakup announcement in September of that year.
Becca never thought she'd appear on Bachelor in Paradise, but she decided to give it a chance last summer. Becca met Thomas in Mexico on the show's seventh season, and the pair flourished and thrived in the real world.
Becca previously said she'd ideally like to tie the knot around her late fathers birthday.
"We're hoping October, but we want to keep it very small, very intimate so it would just be immediate family. We might elope. We would love to do it in Ojai, which is such a special place to us," she told E! News.
But then Becca shared how they'd also consider a wedding in January 2024 and having "a big party like '20s-Gatsby-champagne-towers theme where it's more of just a celebration."
Becca insisted her wedding celebration "will not be traditional by any means" and she wants her guests to have an awesome time.
"We're going to have food trucks and games and a live swing band there," Becca said.
"Most of my family and friends will be traveling through Minnesota so I want it to be more of an experience for them where they can celebrate all weekend and not just four hours of a ceremony and a sit-down meal."
She continued, "I just want everyone to mingle and have a good time. That's what we're aiming for. I say that now, but we don't have anything set."
Thomas was already sold on marrying Becca in November 2021, when he told Hollywood Life that he was in "the most healthy, normal relationship."
And during an October 2021 episode of the "Talking It Out with Bachelor Nation" podcast, Thomas gushed of Becca, "I don't want to spend my life with anybody else... I wouldn't want to wake up next to anybody else."
On Bachelor in Paradise's seventh-season finale, Becca was shown breaking up with Thomas and crushing his heart before overnight Fantasy Suite dates because, despite having "an incredible start" to a relationship, Becca didn't want to leave The Bachelor franchise for the third time with a man unless she knew everything about him, including how he'd face adversity and real-life challenges.
However, the finale concluded with an update on Becca and Thomas' relationship, revealing how they had reunited after filming ended and were dating, "happy and in love."
During Becca and Thomas' appearance on "Talking It Out" last year, Becca revealed she's the one who tracked down Thomas' phone number and initiated their reunion.
"After we ended things, I think I waited a couple days. I didn't have my phone right away and he didn't have his phone right away, so I think I gave it two days," Becca said.
Becca said she and Thomas had reunited in San Diego and picked up right where they had left off, with no hesitation about dating again from either person.
Becca also boasted about how Thomas is different from her past relationships.
In addition to saying Thomas is so passionate about their relationship and prepared to fight "tooth and nail" for her, she added last year, "He is so supportive and he's just funny and quirky in the cutest ways."
"Everything about him, I just felt safe with," Becca continued, "unlike anything I had in the past. I was just like, 'This guy is my guy.'"
Becca even told her mother last year, not long after Paradise ended, that she wanted to marry Thomas, who initially came across like a villain on Katie Thurston's The Bachelorette season.
Despite having been engaged twice before, Becca admitted at the time, "It's the first time I've ever actually said that out loud."