The engaged couple were spotted frolicking together in Bora Bora after stealing a little alone time while on a family holiday.
It's the first time the NBA player has joined in on a trip away with so many of the Kardashian clan.
Romantic getaway: Kim Kardashian strolls hand-in-hand with then-boyfriend-now-fiancé Kris Humphries on a holiday in Bora Bora last month - where he was also introduced to her family for the first time
Kim invited the New Jersey Nets star to join her and her family on holiday to the Pacific island of last month, after both agreed it would be the perfect time for him to get to know his in-laws.
And it must have gone very smoothly for the couple because just a couple of weeks later, Kris, 26, got down on one knee and popped the question.
Silver siren: Kim looked sensational in a shiny animal skin print bikini as she paddled in the clear water by the shore
So in love: Kim and Kris couldn't keep their hands off each other as they kissed and canoodled in the sea
Larking about: Kim laughs in delight as Kris picks her up after dunking her in the crystal clear water
Speaking to Us magazine, Kim, 30, said: 'Family is so important to me. Kris and I were like, "this is going to be the test".'
They were joined at the Hilton Bora Bora Nui Resort & Spa by her mother Kris Jenner, 55, stepfather Bruce Jenner, 61 and her older sister Kourtney, 32, who came with boyfriend Scott Disick, 28, and their 18-month-old son, Mason.
Puckering up: The couple couldn't stop kissing each other and looked happy and at ease in each other's company
Slam dunk! Kris appeared to be having fun throwing his future fiancée around in the Pacific
Also along for the idyllic island ride was Kim's brother Rob, 24, and her half-sisters Kendall, 15, and Kylie, 13.
Unfortunately, younger sister Khloe, 27, and her L.A. Laker husband Lamar Odom, 31, had to stay behind for the NBA playoffs.
Fashion parade: Kim wore a number of barely-there bikinis during the week long holiday which she showed off to Kris as they lounged, played and kissed in the hot tub by their luxury bungalow, on the beach and in the ocean
South Pacific princess: Kim's bikini matched the beautiful aquamarine colour of the sea as she soaked up the sun outside her luxury bungalow
But while he was there to meet and be welcomed into the Kardashian clan, Kris was also able to enjoy some quality time with his bride-to-be, who was just his girlfriend of six months at that stage.
They were snapped walking hand-in-hand in the crystal clear surf together and took every opportunity to sneak and kiss and a cuddle.
And here's another one: Kim also had a black tie halterneck two-piece
Bottoms up! Kim sticks her famous backside in the air as she relaxes in the infinity pool
Quality time: Kim and Kris arrive back from a boat trip together before getting ready for a night out at local restaurant Bloody Mary's
Big sister approval: Kim and Kris spent the next morning catching up with Kourtney as they played in the water with her baby son Mason
They spent a romantic night out together at the Bloody Mary's restaurant, bar and yacht club, and Kim showed off her enviable curves in a brown wrap dress which clung in all the right places.
Kim also managed to put on a full display of several sexy bikinis during the week-long holiday which understandably meant that Kris couldn't keep his eyes of her.
Anything you can do: Proving that curves run in the Kardashian family, Kourtney also took the opportunity to model a number of her own bikinis
Doting parents: Kourtney keeps a watchful eye on an energetic Mason while Scott couldn't resist holding him up in the air
But she wasn't the only one who had packed for a beachside fashion parade with big sister Kourtney determined to be as much of a bikini babe as Kim.
And she and boyfriend Scott Disick seemed to be getting on very well, despite their well-publicised troubles, and played the happy family doting over baby son Mason, who looked very cute in his beach shorts as he ran up and down the sand.
Happy family: Scott, Kourtney and Mason cuddle up in the ocean as they pose for a lovely photo
The holiday is part of an upcoming episode of Keeping Up With The Kardashians as part of the new season which began on Sunday night.
As how well received was Kris into the Kardashian family? 'He won them over for sure', said Kim afterwards.
Family fun: While Kim and Kris went off on their own, the Kardashian family (L-R Bruce, Kris, Jenner, Mason, Kourtney, Scott, Kylie and Rob) hung out by their luxury bungalow