THEN AND NOW: Here's how the longest celebrity couples evolved over the years

Dax Shepard and Kristen Bell had a rocky start to their relationship. In 2007, the couple met, but Bell said she felt "no sparks whatsoever." After finally getting together, they broke up in 2011 but officially tied the knot in 2013. Today, they are still married with two kids.

Read More: 52 of the longest celebrity relationships in Hollywood that prove that love can last

Justin Timberlake and Jessica Biel met at the 2007 Golden Globe Awards and started dating soon after. In 2011, they took a break but said their "I dos" a year later. Now, the couple has one child together.

On the set of John Legend's music video for "Stereo" in 2006, the singer met his future wife, model Chrissy Teigen. In 2013, the couple tied the knot in Italy. Since then, they have become a power couple and have two children together. In 2020, they made headlines when Teigen had a miscarriage with their third child.

While filming "I Know What You Did Last Summer" in 1997, actors Sarah Michelle Gellar and Freddie Prinze Jr. met, but they didn't start dating until 2000. Today, they are married and have two children.

Actors Sacha Baron Cohen and Isla Fisher first met in 2002 at a party in Australia. The pair didn't tie the knot, though, until 2010 at a private wedding attended by only six people.

Catherine Zeta-Jones and Michael Douglas have a lot in common: They're both Academy Award winners, they share the same birthday, and they're madly in love. The couple met at a film festival in 1996 and married in 2000. Despite a short break apart in 2013, the couple is still together today with two children.

In 1997, Victoria Beckham — known then as Posh Spice — gave her number to soccer star David Beckham. She described it as "love at first sight." In 1999, the pair tied the knot, and are still happily married today with four children.

Read More: 20 of the most extravagant celebrity weddings

Comedian Ellen DeGeneres met actress Portia de Rossi in 2004 and said "I do" in 2008. After 16 years together, the pair is still going strong.

Country music stars Tim McGraw and Faith Hill met briefly in 1994, but it wasn't until they went on tour together in 1996 that their relationship really started to heat up. In 1996, the couple tied the knot and they have been together ever since. Today, they have three children and continue to make music together.

Jada Pinkett Smith auditioned to play Will Smith's girlfriend on "The Fresh Prince" in 1994, but it was off screen where their relationship really took off. They married in 1997. In 2020, they made headlines after Pinkett Smith confirmed she'd had a relationship with August Alsina while she and Smith were on a break in their marriage several years ago.

They are parents to Jaden and Willow Smith.

Actors Mark Consuelos and Kelly Ripa met in 1995 when they played love interests on "All My Children." They eloped to Las Vegas about a year later and have been married ever since. Today they have three children.

In 1993, Ted Danson and Mary Steenburgen met on the set of "Pontiac Moon." They tied the knot just two years later. The couple is still "madly in love," and they are parents to two children.

Sarah Jessica Parker's brother introduced her to Matthew Broderick in 1991, and the couple said their vows in 1997. They are still going strong and have three children.

Although Kevin Bacon met his future wife, Kyra Sedgwick, when she was 12 during a chance encounter in a deli, the couple didn't officially start dating until they worked together on the set of "Lemon Sky" in the '80s. The pair got married in 1988 and now have two grown children.

Read More: 15 real people share their secrets to a long-lasting relationship

Tom Hanks and Rita Wilson's relationship started over 30 years ago on the set of an early '80s sitcom called "Bosom Buddies." They were reunited in 1986 and their relationship officially began, and by 1988, they were wed. They have two children together.

Although Oprah Winfrey and Stedman Graham have never married, their longtime partnership has lasted 34 years. They met back in 1986 and have been together ever since.

Like Oprah and her partner, Goldie Hawn and Kurt Russell are not married, but their relationship has stood the test of time. In 1983, the actors got together and they're still together today. They had one child together, Wyatt.

In 1970, Sharon and Ozzy met and in 1982 they married. They created an empire with their unique family after starring in a reality show called "The Osbournes." Today the couple is still together, though there are reports that they've had a few rough patches in the past few years.

Elton John and David Furnish started their relationship in 1993. When England made gay marriage legal, the pair made their coupling official by tying the knot in 2014 at a lavish wedding. Five years later, the two are still together and they have two children.

Beyoncé and Jay-Z first met in 1999 and put a ring on it in 2008. The pair has been together ever since and they have three children, daughter Blue Ivy and twins Rumi and Sir. Although there was an alleged cheating scandal, the couple remains strong, even going on tour together.

In the early '70s, Tomlin and Wagner met when they started working on a project together. Tomlin told Variety it was love at first sight, sparking a romance that lasted decades, eventually tying the knot in 2103. In 2020, they celebrated their 50th anniversary.