Kourtney Kardashian and Travis Barker's relationship timeline, including fertility journey

Kourtney Kardashian Barker and Travis Barker captivated fans everywhere with their whirlwind romance and over-the-top wedding tours these past few years.

After three weddings (one of which was not legally binding) and more than a year of sharing their fertility journey on Hulu's "The Kardashians," the couple is anticipating their first child together, a baby boy.

The Blink-182 drummer and Poosh founder have encountered several obstacles as they tried to grow their family. The pregnancy happened after Kardashian went through in vitro fertilization treatment, as documented in Season 2 of the reality show. The "Kardashians" star also revealed that she had frozen her eggs before dating Barker, but none of them successfully became an embryo.

It all started when Kardashian and Barker went Instagram official for Valentine's Day 2021. Here's a timeline of some of the couple's biggest milestones over the years.

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March 2019: Travis Barker insists he and Kourtney Kardashian are 'just friends'

Rumors about Kardashian and Barker's relationship swirled long before the couple started sharing their love for each other on social media.

In an interview with People, published in March 2019, Barker shut down fans' hopes that the two were anything more than friends. The month prior, E! News published photos of the two stepping out together for dinner in Malibu, California.

“Kourtney’s like a dear friend. That’s it,” he told the outlet, shortly before opening the 2019 iHeartRadio Music Awards. "I mean, I love her to death. I love her family to death. But yeah, just friends."

The two confirmed their romance about two years later.

February 2021: Travis, Kourtney go Instagram official after Valentine's Day

Kardashian and Barker seemed to finally confirm their couple status on Instagram in a simple post, two days after Valentine's Day.

Without including any caption or tagging Barker directly, Kardashian posted a picture of what appears to be her and Barker holding hands inside a car. Fans immediately deduced she was getting cozy with Barker, due to his distinctive tattoos in the picture.

March 2021: Kourtney, Travis hang out with Megan Fox, Machine Gun Kelly

Kardashian and Barker stepped out with fellow couple Megan Fox and Machine Gun Kelly for what looked like a double date at a UFC match in March.

In a clip of the couples shared by ESPN on Twitter, Kardashian and Barker both rocked leather jackets while enjoying lollipops. Fox and Kelly smiled for the cameras in seats just a few feet away.

April 2021: Couple goes tattoo official after cozy snow trip

The couple spent some time together at an intimate snowy getaway before honoring their relationship in a more permanent fashion.

On April 5, Barker posted sweet Instagram videos of him and Kardashian on vacation. In one of them, he and Kardashian embrace in the snow by an outdoor firepit.

"Real is rare," he captioned the post, followed by a black heart emoji. Four days later, Kardashian updated her own Instagram to show that Barker had gotten a tattoo of her first name.

The couple only became more lovey on Instagram, with Barker sharing a NSFW post on Kardashian's 42nd birthday on April 18 that included a video of her sucking his thumb along with two photos of them sharing passionate kisses.

"I (expletive) LOVE YOU!" he wrote. "YOU’RE A BLESSING TO THIS WORLDHAPPY BIRTHDAY"

In another NSFW Instagram post that month, Barker shared pictures and videos of him and Kardashian on a romantic desert getaway, complete with boating and mountain climbing.

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July 2021: Travis and Kourtney go on a romantic trip to Vegas

Kardashian and Barker returned to another UFC match in July and didn't shy away from showing affection, planting a messy smooch on each other when the camera flashed their way.

The couple also recently enjoyed a romantic trip to Las Vegas, with Kardashian sharing photos on Instagram on July 11 of the two in Sin City, coyly captioned: "what happens in Vegas."

August, September 2021: More romantic getaways to Mexico, Italy, Paris

Kardashian and Barker are making up for lost time when it comes to travel: A month later, the couple jetted off to Mexico, Italy and Paris, where they took plenty of snaps cozying up on beaches and sharing drinks, s'mores and an outdoor "movie night in paradise." 

"That’s Amore," Kardashian captioned one post, smooching Barker on a boat off the coast of Italy on Aug. 29.

A few days later, the two embraced in front of the Eiffel Tower. "Forever isn’t long enough," Barker captioned the series of Instagram photos Sept. 3.

September 2021: Travis Barker credits Kourtney Kardashian with overcoming fear of flying

One week later, Barker opened up about his romance with Kardashian in a Nylon interview published Sept. 8, revealing the moment he agreed to travel with her.

"I made a deal with her that she had just said to me, 'I would love to do so much traveling with you. I want to go to Italy with you. I want to go to Cabo with you. I want to go to Paris with you. I want to go to Bora Bora with you,'" he recalled.

"And I said, 'Well, when the day comes you want to fly, I'm telling you I'll do it with you. I would do anything with you. And just give me 24 hours notice.' And that's what she did."

Barker, who has previously opened up about his PTSD following a 2008 plane crash that killed most of those on board including three of his friends, said he wouldn't have gotten on an airplane again if it wasn't for Kardashian's support.

"It's still something very new to me, but having something that gives me the strength and hope to be able to overcome things that were so traumatic in my life, it just says a ton," he said. "She's definitely that for me. I'm invincible when I'm with her. It's just like I never dreamed, I never even considered flying again."

Septemeber 2021 ? again: Red carpet debut at the VMAs

The couple has been publicly together for months, but September marked the first time they appeared together on a red carpet when they posed together outside the MTV Video Music Awards on Sept. 12 in coordinating edgy black ensembles.

Later in the evening, Kardashian was joined by Megan Fox onstage to introduce their boyfriends' performance (Fox is dating rapper/singer Machine Gun Kelly), where Fox introduced the two men as "our future baby daddies." 

October 2021: Travis proposes to Kourtney in beachside engagement

Kardashian and Barker are making their way down the aisle. On Oct. 18, Barker got down on one knee by the beach, where he elaborately laid out dozens of roses in the shape of a heart to ask Kardashian to marry him.

The Poosh founder shared photos from the intimate engagement on Instagram, writing: "forever @travisbarker."

"FOREVER," Barker commented on his fiance's post.

A few days later, Kardashian shared more photos from the special day. "I woke up all night thinking it was a dream," she wrote.

"Forever with you is a dream come true," Barker replied to her in the comments.

October 2021: A Kravis Halloween

Kardashian and Barker went all-out for Halloween 2021, rolling out three different costumes for the spooky holiday.

Days after their Oct. 18 engagement, the couple channeled Sex Pistols bassist and punk rock icon Sid Vicious and his girlfriend, Nancy Spungen, at the NoCap x Travis Barker House of Horrors concert in Malibu. "Till death do us part," Kardashian captioned a photo of their first costume. "Our love will never dieee," Barker commented.

Then they dressed up as Alabama and Clarence from the 1993 classic film "True Romance." Kardashian rocked pink leopard-print leggings and a sheer blue top paired with a short blonde wig as Patricia Arquette's character, while Barker dressed as Christian Slater's character, with a Hawaiian shirt, jacket and shades.

Lastly, the duo dressed up as Edward Scissorhands and his love interest, Kim Boggs, from Tim Burton's 1990 film of the same name. In one Instagram post, Kardashian quoted the film: "Innocence is what he knows. Beauty is what she sees."

"‘Till next Halloween," she wrote in another post.

November 2021: Wedding date night for Kourtney, Travis

Kardashian praised Barker on his 46th birthday on Nov. 14 with a mash note along with photos on Instagram of the two looking head over heels. In her caption, Kardashian wrote she loved Barker "more than anything," calling her shirtless beau "my favorite everything."

"Happy birthday to you my baby!" she added.

Barker replied to her in the comments writing: "You’re a dream come true, my soul mate my everything I LOVE YOU."

The night before Barker's 46th birthday, the couple attended the Bel-Air Hotel wedding of PR executive and Kardashian family friend Simon Huck to longtime boyfriend Phil Riportella.

Kardashian posted photos of herself and her rocker decked out in formal attire, with Barker sporting a tuxedo and Kardashian holding a glass of champagne. "Going to the chapel," she wrote.

"Our turn next ??" commented Barker under her post.

Momager Kris Jenner posted her own birthday Instagram photos with Barker. "You are an amazing dad, friend and fiancé," she wrote in the caption.

Barker wrote, "I love you" to his future mother-in-law in the comments.

Kim Kardashian shared a photo of herself with Barker and her sister to her Instagram Stories writing: "Happy Birthday Trav! You're an amazing person and I'm so happy you're part of our fam! XO"

April 2022: Kourtney, Travis have 'epic' Vegas wedding ceremony

Kardashian and Barker attended the 2022 Grammy Awards, where the love birds hit the red carpet together in coordinating black outfits and locked lips in a sultry kiss for all to see.

Barker performed during H.E.R.'s set along with Lenny Kravitz, Jimmy Jam and Terry Lewis.

The "Kardashians" star and the Blink-182 drummer had a wedding ceremony shortly after Barker's Grammy performance in Las Vegas.

On April 6, Kardashian shared photos on Instagram from the big day. The series of pictures shows Barker and Kardashian both wearing sunglasses and decked out in leather clothing, standing before an Elvis impersonator. Kardashian even held a bouquet of red roses.

"Found these in my camera roll," Kardashian captioned the post. "Once upon a time in a land far, far away (Las Vegas) at 2am, after an epic night and a little tequila, a queen and her handsome king ventured out to the only open chapel with an Elvis and got married (with no license). Practice makes perfect."

The two weren't legally married in Vegas because they couldn't get a marriage license on time.

"There was no possibility to get a marriage license at that hour. ... I'm like, 'Are you guys lying?' We asked like five times, 'What do we have to do to make this happen?' And they were like, 'It opens at 8 o'clock,'" Kardashian shared on "Jimmy Kimmel Live!"

"We just did it anyways. It's what's in the heart," she said.

May 2022: Kravis legally ties the knot

The lovebirds officially tied the knot on May 16.

Kardashian and Barker shared photos from their weekend wedding on Instagram. Kardashian posted black-and-white photos of the bride and groom driving away in a lowrider convertible with a "Just Married" sign hanging off the bumper and shared other photos of the two looking lovingly at one other in the car.

Kardashian's grandmother Mary Jo "MJ" Campbell and Barker's father Randy Barker were by their side the day of the wedding, according to photos posted by the couple.

"Till death do us part," Kardashian and Barker captioned their posts.

The "Kardashians" star's famous last name became her middle name after they got married.

Speaking to the "Today" show on about her choice to change her last name to Barker, the Poosh founder said, "It was just a given; it wasn't a thought. So now my middle name is Kardashian."

Third time's the charm! See photos of Kourtney Kardashian, Travis Barker's lavish Italian wedding

May 2022: Kourtney, Travis get married a third time in Italian ceremony

Kardashian and Barker said "I do" for the third time on May 22, this one a lavish ceremony in Portofino, Italy.

Barker's representative confirmed the wedding to USA TODAY after the musician's teenage daughter, Alabama, shared images of her father and Kardashian, clad in a white gown and veil, at the altar.

Kardashian kept it traditional as she donned a white Dolce & Gabbana minidress with an embroidered cathedral-length veil. "happily ever after," she captioned the photo.

June 2023: Kourtney reveals 'Travis, I'm pregnant' at Blink-182 show

Barker did more than fall in love with the girl at the rock show — he learned that his wife is pregnant in a surprise announcement at his concert.

Kardashian held up a sign in the crowd at the Los Angeles stop for Blink-182's show on June 16, sharing the message that she's expecting. "Travis, I'm pregnant," the sign read in all caps, as Kardashian jumped up and down, smiling and laughing.

June 2023: Kourtney and Travis reveal they're expecting a baby boy

The Barkers announced with a literal drumroll and blue streamers that they were expecting a baby boy, as shared in an Instagram video on June 24.

During the reveal party for the sex of their baby, Kardashian sat on Barker's lap as he led a drum roll on his set. When he hit the cymbals, blue streamers launched into the air to mark that they were having a boy.

Kardashian took to Instagram to share photos from her maternity photoshoot. In the images, she caresses her baby bump in a light blue ensemble.

"I already know his name," Barker commented on one of the photos, adding a winking face emoji. Kardashian captioned one set of photos, "little drummer boy coming soon."

September 2023: Kourtney undergoes 'urgent fetal surgery' as Travis Barker leaves Blink-182's tour

On Sept. 1, Blink-182 announced that several of their U.K. shows had to be canceled because Barker had "an urgent family matter." On Sept. 6, Kardashian revealed that their son was "in my tummy and safe" after she underwent "urgent fetal surgery."

"I will be forever grateful to my incredible doctors for saving our baby’s life. I am eternally grateful to my husband who rushed to my side from tour to be with me in the hospital and take care of me afterwards, my rock," she wrote in an Instagram caption. "And to my mom, thank you for holding my hand through this."

Contributing: Rasha Ali, Pamela Avila, Edward Segarra, Naledi Ushe and KiMi Robinson, USA TODAY

This article originally appeared on USA TODAY: Kourtney Kardashian and Travis Barker's relationship: Timeline