But it wasn鈥檛 always smooth sailing in their relationship, with an Aussie actress later finding herself in the tangled web.
In 2019, it was exposed by US tabloid newspaper National Enquirer that the Amazon founder had been having an eight-month affair with former news anchor Sanchez.
The news effectively ended their respective marriages: Bezos鈥 25-year marriage to novelist MacKenzie Scott, and Sanchez鈥 14-year marriage to Hollywood talent agent Patrick Whitesell.
But don鈥檛 feel too bad for the dejected spouses: Scott walked away with $US38 billion ($58 billion) worth of Amazon stock and Whitesell still had his cushy net worth of $US450 million ($690 million).
Then, months after his divorce from Sanchez, who is the mother of his two children, 60-year-old Whitesell found love again with former Home and Away star, Pia Miller, 41.
Unlike the hoopla in Venice for the Bezos-Sanchez wedding, Whitesell married Pia in a secret ceremony in 2021, and thus she became Pia Whitesell.
The actress, who affectionately hashtags their couple posts 鈥淧W2鈥, has since moved into the Hollywood exec鈥檚 sprawling $57 million mansion in Los Angeles along with her two sons from previous relationships: Isaiah, 22, and Lennox, 18.
The couple enjoy the quiet life away from spotlight and live in complete contrast to the Bezos, 61, and Sanchez, 55.
Even this weekend, when the newlyweds were living large in Venice, Whitesell and Pia enjoyed casual lunches and dinners with friends.
She was even seen preparing to tuck into some Aussie snacks, such as Tim Tams, Burger Rings, Twisties and Minties, sent to her by an Aussie friend.
鈥淢ate!!! Nothing says I [heart emoji] U quite like this,鈥 she captioned a photo on Instagram.
Although Whitesell and Pia shy away from the spotlight, they still live a very privileged life. This year alone, they have travelled to Ireland, Spain and Sydney, where Pia lived for the bulk of her acting career.
The couple spent the New Year鈥檚 break in the Harbour City, where they chartered a yacht for a few days to enjoy with their family and friends.
Both Whitesell and Pia have not spoken publicly about their relationship, but the actress has paid tribute to her husband on Instagram many times.
鈥淧atric茂赂聫k, Here鈥檚 to many more years of laughter, love, and making incredible memories. We love you deeply, and can鈥檛 wait to see what this next chapter brings!!!茂赂聫鈥 she wrote in a February post for his birthday.
鈥淎s you celebrate this milestone, my wish for you is to embrace this journey with all the joy and love it brings. You鈥檝e worked so hard, loved so deeply, and led with such GRACE 鈥 it鈥檚 time to enjoy life to its fullest!
鈥淚 pray that God continues to bless you with good health, happiness, and endless joy in the years to come!! Deeply loved, Greatly blessed and highly favoured. I Love you always.鈥