Scott Disick is showing off his bikini babe.

Kourtney Kardashian's 34-year-old ex and the 19-year-old model, daughter of Lionel Richie, are vacationing at his family friend and Girls Gone Wild creatorJoe Francis' private beachside estate, Casa Aramara, in Punta Mita, Mexico.

On Sunday, Scott posted an Instagram of himself and his bikini-clad girlfriend leaning on a helicopter with the caption, "The boat is way 2 long we had 2 chop it."

Right around the same time, the teen posted a cuddled-up pic of her older man aboard a boat.

On Saturday, Scott shared on his Instagram Stories feed a photo of Sofia in a black bikini with the caption, "Water."

The two arrived via private jet on Saturday morning and headed straight for the pool and hot tub, E! News has learned.

"They spent all day laying out side-by-side relaxing and watching the beach," a source said. "Scott was sipping on water and was very mellow. Joe was around and they hung out and talked with him for a bit, but then he left them alone for some private time. Scott and Sofia went in the hot tub and kissed and made out. Scott gave Sofia a massage and they had their arms wrapped around each other. They didn't shy away from PDA even when Joe was around."

"They are very happy together, always cracking each other up and laughing together," the source said. "They are always having fun." 

The two enjoyed meals cooked by a private chef and also had a butler to wait on them. 

Scott Disick, Sofia Richie, Mexico

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The couple got caught getting cozy in the pool during their Mexican vacation.

Scott Disick, Sofia Richie, Instagram, Mexico

Sofia Richie/Instagram

Sofia posted this photo of her and her beau on a boat in Mexico on Jan. 14.

Scott Disick, Sofia Richie, Instagram, Mexico

Scott Disick/Instagram

During their Mexican vacay, the Lord wrote, "The boat is way 2 long we had 2 chop it."

Sofia Richie, Scott Disick, Mexico

Instagram

The two vacation together in Punta Mita, Mexico.

Sofia Richie, Scott Disick

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The two are all smiles on a snowy trip to the celebrity vacation hotspot in Colorado ahead of New Year's Eve 2017.

Scott Disick, Sofia Richie

Instagram

Scott and Sofia do some post-Christmas jet-setting to a snowy location for a romantic winter getaway.

Sofia Richie, Scott Disick

Instagram

Scott films Sofia getting into the 2017 holiday spirit.

Scott Disick, Sofia Richie

Alexander Tamargo/Getty Images for Sugar Factory

The two stare into each other's eyes Art Week Party at Sugar Factory American Brasserie in Miami.

Scott Disick, Sofia Richie

Alexander Tamargo/Getty Images for Sugar Factory

The two share a kiss at the Art Week Party at Sugar Factory American Brasserie in Miami.

Scott Disick, Sofia Richie

Alexander Tamargo/Getty Images for Sugar Factory

The two enter the Art Week Party at Sugar Factory American Brasserie in Miami.

Scott Disick, Sofia Richie

Splash News

The two kiss passionately inside the DJ booth at the LIV nightclub.

Scott Disick, Sofia Richie

Romain Maurice/Getty Images for Haute Living

The two appear cozy at Haute Living, Art Life and the Maddox Gallery London's VIP cocktail party and presentation of the artworks of street artist Alec Monopoly and photographer David Yarrow during Art Basel Week in Miami.

Scott Disick, Sofia Richie

OHPIX / BACKGRID

The two lounge in the sun on Miami Beach.

Scott Disick, Sofia Richie

VEM / BACKGRID

The two hit Miami Beach with friends during Art Basel Week.

Scott Disick, Sofia Richie

Andrew Toth/Getty Images for Dujour

The lovebirds head to Miami to attend the DuJour Art Basel Kickoff party held at the Confidante Hotel in Miami Beach. 

Sofia Richie, Scott Disick

Splash News

The lovebirds share a sweet smooch in Venice.

Sofia Richie, Scott Disick

Splash News

The two walk close together during their Italian getaway.

Sofia Richie, Scott Disick

Ciao Pix/BACKGRID

The two wave on a gondola in Venice, Italy.

Sofia Richie, Scott Disick, Milan

Instagram

The lovebirds show some PDA in Milan on Oct. 15, 2017.

Sofia Richie, Scott Disick

TheImageDirect.com

The two are spotted holding hands at LAX on Oct. 14, 2017.

Scott Disick, Sofia Richie

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Scott and Sofia grabbed some drinks at a coffee shop in Los Angeles on Oct. 8, 2017.

Scott Disick, Sofia Richie, Mexico, Instagram

Instagram Story

The lovebirds were all over each other when they snuggled up together in Mexico.

Scott Disick, Sofia Richie

Instagram

The pair went to Punta Mita, Mexico and packed on the PDA on Oct. 3, 2017.

Sofia Richie, Scott Disick, Mexico

Clasos.com.mx / Splash News

The pair had a very steamy smooch on their romantic getaway in Puerto Vallarta, Mexico.

Scott Disick, Sofia Richie, Miami

Pichichipixx.com / Splash News

Scott and Sofia were enjoying their holiday in Miami on Sept. 23, 2017. The 34-year-old reality star and the 19-year-old model were spotted walking along the sand at the beach.

Scott Disick, Sofia Richie

DAME / BACKGRID

The two partied on the SS Groot together in Miami.

Scott Disick, Sofia Richie

DAME / BACKGRID

Kourtney Kardashian's ex was pictured passionately kissing his new girlfriend while they enjoyed an afternoon boat ride in Miami Beach on Sept. 23, 2017.

Scott Disick, Sofia Richie

VEM / BACKGRID

The pair held hands in Miami as they continued their vacation together.

Scott Disick, Sofia Richie

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Following the family style dinner at Seaspice, in which they ordered meli melo, truffle pizza, king crab Legs, and octopus, the couple were surprised with a congratulatory cake with the inscription "Congratulations Scott & Sophia."

Scott Disick, Sofia Richie

Snapchat

A source tells E! News that while out to dinner at Seaspice in Miami, they ordered champagne and Barceló rum cocktails for the table and that Scott "held and kissed his new love through out the evening."

Scott Disick, Sofia Richie

Instagram

Sofia posted this pic from Miami with her legs draped over Scott's.

Scott Disick, Sofia Richie

Instagram

The two showed they world they were a couple when Scott shared this PDA-filled social media post.

Sofia Richie, Scott Disick

BG002/Bauer-Griffin/GC Images

Sparking rumors, Scott and Sofia were spotted on Sept. 15, 2017 in Los Angeles.

Sofia Richie, Scott Disick, Bikini

Instagram

Sofia Richie, Scott Disick, Beach

Instagram

Scott and Sofia have been dating since mid-2017. In recent months, he has shared more photos of her on Instagram.

The two, who first sparked romance rumors last May during a visit to Cannes, have vacationed together many times, including in Mexico. Over the New Year's holiday, they took a trip to snowy Aspen, Colorado, where Scott lost his temper when his girlfriend started chatting with her former fling, Lewis Hamilton. Another source told E! News that after dating him for several months now, Sofia "knows how to handle" Scott and was able to "calm him down."

"They will get in small fights and are over it within a few minutes," the insider said. "Sofia is definitely a good match for him because she understands him and puts up with his behavior in moments like this."

See photos of Scott and Sofia over the past few months:

"Things are going well with Sofia and Scott," another source told E! News. "She is really happy with him. They have little tiffs and moments of bickering, but overall things are great at the moment."

Watch Keeping Up With the Kardashians on Sunday at 9/8c on E!

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