SAN FRANCISCO (CBS SF/AP) — It all began with a proposal on the big screen at then AT&T Park, the marriage of social media icon Kim Kardashian and rap star Kanye West came to an end Friday as the couple began divorce proceedings.

Like the home of the San Francisco Giants which has changed its name to Oracle Park, the Kardashian-West romance has undergone plenty of changes since the October 22, 2013, big screen proposal.

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Kardashian West filed for divorce from Kanye Friday after 6 1/2 years of marriage, court records show. The move brings an impending end to one of the most followed celebrity unions of the 21st century — the marriage of a reality TV superstar and a hip-hop and fashion phenomenon with four kids, a vast fortune to split and even more fame.

The couple began dating in 2012 and had their first child in 2013. West proposed later that year using the giant screen at the empty waterfront ballpark and the two married May 24, 2014, in a ceremony at a Renaissance fortress in Florence, Italy.

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The beginning of the end of the marriage comes after the September announcement that the show that made her family’s name, “Keeping Up With The Kardashians,” was coming to an end in 2021 after 14 years.

It was the first marriage for the West, 43, and the third for Kardashian, 40. While the union wasn’t long, it outlasted the predictions of many cynics who thought doom was inevitable given the two oversized personalities, West’s well-known volatility and the fact that Kardashian’s previous marriage, to former NBA player Kris Humphries, was fleetingly brief.

Kardashian’s first marriage at age 19 in 2000 to music producer Damon Thomas lasted until 2004, and in 2011, she married Humphries in a heavily hyped wedding that was televised in a two-part special on “Keeping Up With the Kardashians.”

She filed for divorce less than three months later, though was still legally married in 2012 when she and West, a friend for years who had paid tribute to her in his songs, became a couple, and she became pregnant.

Since the Humphries divorce, Kardashian has retained the services of perhaps the best-known divorce attorney in the country, Laura Wasser, dubbed the “Disso Queen” after representing clients that include Angelina Jolie, Johnny Depp and Britney Spears. Wasser filed the divorce Friday in Los Angeles Superior Court. It was first reported by celebrity website TMZ.

Kardashian is a Los Angeles-area lifer, but West is from Chicago and spends much of his time, including many of the latter months of the marriage, at his ranch in Wyoming, and has said he wants his kids with him there.

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Their four children are all 7 or under: North, age 7, Saint, age 5, Chicago, age 3, and Psalm, 21 months old.