Longtime friends became a lifelong partnership (and one of the hottest couples on the planet) when Kanye West and Kim Kardashian became romantically involved in the spring of 2012. Since then, we’ve watched Kimye experience the joys of marriage and parenthood — and now, their family is about to expand even further with the announcement about baby No. 2 on the way. Relive all of the high points of Kanye and Kim’s coupledom with a relationship timeline. 

Kim Kardashian and Kanye West shared studio time in Culver City, Calif., for what would was presumably Kim’s debut musical project. “He’s a musical genius, so I would be honored to work with Kanye,” Kardashian said at the time. "It's all in fun. We're just trying to have a good time."

Kanye name-checked Kardashian -- who had split from husband Kris Humphries -- on the song “Theraflu” (later re-named “Cold”), rapping, “I’ll admit, I had fell in love with Kim.” Meanwhile, Kim played coy about the pair’s relationship on the Today show. "Kanye and I have been friends for years," she said, adding, "You never know what the future holds or where my life will take me. So ... I like the song!" 

After her Today appearance, Kanye and Kim stepped out as a couple: The pair dined at a New York City restaurant and was spotted holding hands.

Kim and Kanye appeared as the hot couple at Paris Fashion Week, after Kim attended West’s March 2012 show as a friend.

Kanye announced that he and Kim were expecting their first child together after telling his audience at an Atlantic City concert, “Stop the music and make noise for my baby mama.”

Kim sported a fabulous baby bump (and Givenchy) alongside Kanye as the pair arrived at the 2013 Met Costume Institute Gala.

The couple welcomed their first child, a daughter named North West, into the world on June 15, 2013.

Kanye asked for Kim’s hand in marriage during a lavish proposal at AT&T Park in San Francisco. She says yes!

Kim appeared in the music video for Kanye’s song “Bound 2,” straddling him topless as he rode a motorcycle.

Ahead of their impending nuptials, Kanye and Kim appeared on the cover of Vogue together, with Kim dressed in a wedding gown.

On May 24, 2014, Kanye and Kim tied the knot in a star-studded wedding that spanned from Paris to Florence. One of Kim’s breathtaking wedding shots becomes the most-liked Instagram photo of 2014, with 2.4 million likes to date.

A studio version of “Awesome,” a love song Kanye wrote for Kim, leaked online, after Kanye debuted the track live in 2013.

Kanye shouted out Kim on Twitter on their wedding anniversary, while Kim responds by sharing never-before-seen wedding photos on Instagram.

Kim Kardashian announced that she is expecting her second child during a tease of Keeping Up With the Kardashians. North is going to be a sister!

Kim Kardashian celebrated another milestone in her life the way she does best -- sharing it on social media. This past February, the Internet-breaking queen shared an adorable photo of her second child with Kanye, a son named Saint, who is also the baby brother to the couple’s two-year-old daughter, North.

A blonde Kim Kardashian supported her hubby at the simultaneous Yeezy Season 3 fashion show and The Life of Pablo listening party at New York’s Madison Square Garden in February. The first family of reality TV including momager Kris Jenner, sisters Kourtney, Khloe, Kendall and Kylie also made an appearance.

Style stans Kim Kardashian and Kanye West had more fun playing dress up for this year’s Met Gala theme “Manus x Machina: Fashion in an Age of Technology.” The couple slipped on shimmery Balmain pieces while ‘Ye wore silvery lenses to match. “I love my husbands eyes at the Met #AfterPartyVibes,” Kim K wrote on Instagram.

In May, KimYe celebrated their two-year anniversary with a mushy pic on Kim’s Instagram and even flying out to Italy, the location of their lavish nuptials in 2014. “Happy 2 year anniversary to the love of my life! You make me so happy! I love you so much!!!,” Mrs. Kardashian West wrote.

The “Only One” rapper celebrated an extra special Father’s Day with his two bundles of joy on the beach. A beaming momma Kim shared an intimate family pic of Daddy ‘Ye on the beach with his children with the caption: “Happy Fathers Day babe! Thank you for always putting our family first and being the best dad to our babies! I couldn't ask for a better husband and more perfect family. We love you so much!"

The Adidas designer opted for a more high-end look by teaming with esteemed fashion house Balmain for his minimal yet runway-ready visual for “Wolves.” The music video-meets-style ad, directed by Steve Klein, also stars his wife, Kim Kardashian and supermodels Joan Smalls, Jourdan Dunn, Alessandra Ambrosio among others.

KimYe nearly lock lips for the September 2016 cover story for Harper’s Bazaar. Inside, the couple discuss nude selfies and their biggest insecurities. "I love [Kim's] nude selfies," said Kanye. "Like, I love the ones from the side, the back ones, and the front. I just love seeing her naked; I love nudity. And I love beautiful shapes. I feel like it's almost a Renaissance thing, a painting, a modern version of a painting. I think it's important for Kim to have her figure. To not show it would be like Adele not singing."