'Bachelorette' Star Kaitlyn Bristowe and fiance Shawn Booth just can't stop with the intense PDA

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'Bachelorette' Stars Kaitlyn Bristowe and Shawn Booth Engage in Major PDA!

Obviously, Bachelorette star Kaitlyn Bristowe and her handsome fiance, Shawn Booth, are still in the infatuation stage of their relationship.

Kaitlyn and Shawn had dinner at Catch restaurant in New York City on Tuesday night, where they couldn't keep their hands off one another. Shawn -- who Kaitlyn chose in the season finale of The Bachelorette over controversial runner-up Nick Viall -- gave the petite 29-year-old dance instructor a piggyback ride at one point, and also gave her a big smooch on the lips in plain sight.

WATCH: 4 Reasons Why We Love (And Will Miss!) Kaitlyn Bristowe as 'The Bachelorette'

"After a day in heels, he comes in pretty handy," Kaitlyn joked on Instagram about Shawn's sweet gesture.

ET caught up with the affectionate couple after the Bachelorette season finale on Monday, when Kaitlyn talked about her stunning $150,000 Neil Lane engagement ring.

"Honestly, it scares me. It scares the crap out of me," she admitted. "I wear inexpensive things, and it's just bizarre to me to have like a down payment on a house on my finger."

It also appears the two are relieved to no longer have to keep their relationship a secret, especially after an accidental Snapchat almost spoiled the ending for Bachelorette fans. Shawn wasted no time Instagramming a picture of him and Kaitlyn together on Tuesday, showing off their fit bods.

My girl. @kaitlynbristowe

A photo posted by Shawn Booth (@shawn_booth18) on

"My girl," he wrote.

WATCH: EXCLUSIVE -- Kaitlyn Bristowe Is 'Not Ashamed' of Having Sex on the Show

Check out the video below to hear Kaitlyn dish to ET about the cringe-worthy finale moment with Nick, when she actually stopped him mid-proposal.

Bachelorette' Kaitlyn Bristowe Laughs At Her Last, 'Awkward' Moment With Nick

More photos of the pair:
31 PHOTOS
Kaitlyn Bristowe, The Bachelorette
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'Bachelorette' Star Kaitlyn Bristowe and fiance Shawn Booth just can't stop with the intense PDA
(Photo via ABC)
NEW YORK, NY - JULY 28: Shawn Booth and Kaitlyn Bristowe seen on July 28, 2015 in New York City. Credit: Diego Corredor/MediaPunch/IPX
NEW YORK, NY - JULY 28: Shawn Booth and Kaitlyn Bristowe visit Good Morning America on July 28, 2015 in New York City. Credit: Diego Corredor/MediaPunch /IPX
JIMMY KIMMEL LIVE - Emmy Award-nominated 'Jimmy Kimmel Live' airs every weeknight (11:35 p.m. - 12:41 a.m., ET), packed with hilarious comedy bits and features a diverse lineup of guests including celebrities, athletes, musicians, comedians and humorous human interest subjects. The guests for MONDAY, JULY 27 included actor Owen Wilson ('No Escape'), Kaitlyn Bristowe and Shawn Booth ('The Bachelorette') and musical guest Juanes. (Photo by Randy Holmes/ABC via Getty Images)
NEW YORK, NY - JULY 28: Shawn Booth and Kaitlyn Bristowe visit ABC's 'Good Morning America' in Times Square on July 28, 2015 in New York City. (Photo by James Devaney/GC Images)
GOOD MORNING AMERICA - 'The Bachelorette's' Kaitlyn Bristowe and Shawn Booth are guests on 'Good Morning America,' 7/28/15, airing on the ABC Television Network. (Photo by Fred Lee/ABC via Getty Images)
NEW YORK, NY - JULY 29: Kaitlyn Bristowe and Shawn Booth leave Catch on July 29, 2015 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - JULY 29: Television personalities Shawn Booth (L) and Kaitlyn Bristowe leave the 'Good Morning America' taping at the ABC Times Square Studios on July 29, 2015 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - JULY 29: Television personalities Shawn Booth (L) and Kaitlyn Bristowe leave the 'Good Morning America' taping at the ABC Times Square Studios on July 29, 2015 in New York City. (Photo by Raymond Hall/GC Images)
GOOD MORNING AMERICA - 'The Bachelorette's' Kaitlyn Bristowe and Shawn Booth and Trista and Ryan Sutter are guests on 'Good Morning America,' 7/29/15, airing on the ABC Television Network. (Photo by Fred Lee/ABC via Getty Images)
(Photo via ABC)
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(Photo via ABC)
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Kaitlyn Bristowe arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
THE BACHELORETTE - ABC's hit romantic reality series, 'The Bachelorette,' kicks off its 11th season continuing the surprises of this season's 'Bachelor' with the biggest one of all: there will be two Bachelorettes. One is Kaitlyn, the gorgeous, fun-loving, warm-hearted, but irreverent firecracker who let down her guard only to have her heart crushed. Who will the men prefer? Eventually, only one woman will be left to hand out the final rose. 'The Bachelorette' returns to ABC, premiering MONDAY, MAY 18 (9:00-11:00 p.m., ET), on the ABC Television Network. (Photo by Craig Sjodin/ABC via Getty Images) KAITLYN BRISTOWE
America fell in love with two very different but dynamic Bachelorettes last season - Britt Nilsson and Kaitlyn Bristowe. It was hard to choose between the beautiful, charming Britt and the gorgeous, fun-loving, wise cracking Kaitlyn. So now, 25 eligible bachelors will choose between these two amazing women. For the first time in franchise history there will be two Bachelorettes. Chris Soules sent both ladies home broken hearted, but now with another chance at love, both women are ready to take a journey they hope will wind up happily ever after, on 'The Bachelorette' two-night premiere event, MONDAY, MAY 18 (9:01-11:00 p.m., ET) and TUESDAY, MAY 19 (8:00-9:00 p.m, ET), on the ABC Television Network. (Photo by Rick Rowell/ABC via Getty Images) BEN H., KAITLYN BRISTOWE
Kaitlyn Bristowe arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
(Photo via ABC)
Kaitlyn Bristowe, left, and Britt Nilsson arrive at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
Kaitlyn Bristowe, left, and Britt Nilsson arrive at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
Kaitlyn Bristowe, left, and Britt Nilsson arrive at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
Photo by: KGC-146/STAR MAX/IPx 2015 6/23/15 The Bachelorette Kaitlyn Bristowe at ABC Television Studios for an appearance on Good Morning America. (NYC)
Kaitlyn Bristowe arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. (Photo by Eric Jamison/Invision/AP)
NEW YORK, NY - JUNE 23: Kaitlyn Bristowe seen in New York City. Credit: June 23, 2015. Credit: RW/MediaPunch/IPX
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