Age ain’t nothing but a number — except when it comes to true love. Sometimes it works; other times, not so much. But, hey, the heart wants what it wants, even when it’s too young to know better. See the celebrities who married young, from Reese Witherspoon and Ryan Phillippe to Angelina Jolie and Jonny Lee Miller.

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Reese Witherspoon and Ryan Phillippe
Reese Witherspoon married Ryan Phillippe when she was 23 and the young couple had two kids. They announced their separation shortly after their seventh anniversary but have managed to keep things fairly amicable, though despite some people's wishes that the couple get back together, it's not going to happen anytime soon. Growing up fast can do that to people.

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Angelina Jolie and Jonny Lee Miller
Jolie's Hackers co-star became her first husband, when she was 21. But unlike her divorce from Brad Pitt, Angie and Jonny's split was amicable.

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Heidi Montag and Spencer Pratt
Heidi and Spencer knew each other for years so their marriage, which went down when Montag was 22, was practically a done deal. Surprisingly, reality TV didn't break them up; not only are they still married, but they have a baby. That's right, Speidi are parents.

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Britney Spears and Kevin Federline
The singer got involved with her backup dancer, and they eventually married when she was 22. Britney Spears and Kevin Federline had two kids, starred in a reality show, but the marriage didn't last. And we all kinda knew it wouldn't. But she managed it all with a smile on her face; look at her now!

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Melanie Griffith and Don Johnson
Griffith was 17 when she married first husband Johnson. The celebrity couple remained friendly, largely thanks to their daughter, Dakota Johnson.

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Jessica Simpson and Nick Lachey
Jessica Simpson was 22 when she married Nick Lachey, and their reality show was everything. Until it wasn't, leading to one of the most scandalous breakups in modern Hollywood history.

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Courtney Stodden and Doug Hutchison
Talk about celebrity couples with surprisingly big age gaps! He was 51, she was 16. What could go wrong for Courtney Stodden and Doug Hutchison? When these two split, not many were surprised.

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Dolly Parton and Carl Dean
Country star Dolly Parton married her husband when she was just 20. And unlike most of the celebrity couples on this list, they're still together! Dolly Parton and Carl Dean have been married for over 50 years.

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Kim Kardashian and Damon Thomas
Pre-Kanye, there was Kris Humphries. But before K-Hump, there was her first marriage rodeo, to music producer Thomas, whom KK wed when she was a fresh-faced 20-year-old. Just like many of the other stars on our list of celebrities who have been married two times or more, Kim Kardashian and Damon Thomas divorced three years later.

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Uma Thurman and Gary Oldman
Before Ethan Hawke, Uma tied the knot with her State of Grace co-star, Gary Oldman. The celebrity couple wed when she was only 20.

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Kate Hudson and Chris Robinson
Kate was 21 and almost famous when she married first husband Chris Robinson. The celebrity duo share teenage son, Ryder.

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Avril Lavigne and Deryck Whibley
Chad Kroeger may have been her last husband but Avril's first was Sum 41 frontman Deryck Whibley, whom she married when she was 21. Despite both marriages not working out, she's clearly a cool chick and has remained close with both exes, making them one of the many famous
couples whose splits were totally amicable.

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Rachel Miner and Macaulay Culkin
He may have been with Mila Kunis for nearly a decade, but before her, the Home Alone star married Miner when they were both just 18 years young.

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LeAnn Rimes and Dean Sheremet
Perhaps if the country singer hadn't married her backup dancer at the age of 17, she wouldn't have cheated on him with now-husband Eddie Cibrian, and Cibrian's marriage to Brandi Glanville would've been safe. Pfft, who are we kidding? Nothing could've saved that. For as long as we can remember, the two ladies have been embroiled in one of the nastiest celebrity feuds to ever hit the Real Housewives.

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Bo Derek and John Derek
Bo was 16 when she married the 30-year-old photographer and they defied the odds, remaining married until he passed away in 1998.

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Solange Knowles and Daniel Smith
Bey's little sister was 17 when she walked down the aisle for the first time. Though Solange Knowles and Daniel Smith share a son, they divorced after a few years.

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Olivia Wilde and Tao Ruspoli
Before she married Jason Sudeikis, a 19-year-old Wilde married the Italian prince.

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Drew Barrymore and Jeremy Thomas
Drew's first marriage was to bar owner Thomas, when she was just 18 years old. They divorced two months later. Yeah, that's about right.

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Milla Jovovich and Shawn Andrews
The model-turned-actress was just 16 when she walked down the aisle with Andrews, who was five years her senior. The marriage was annulled shortly after.

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Kevin Jonas and Danielle Deleasa
Yes, some celebs do save themselves for marriage. Kevin Jonas was a 22-year-old virgin when he married Deleasa. There's something kind of sweet about that.

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Taylor Hanson and Natalie Bryant
The middle Hanson bro married his wife at the young age of 19. MmmKay. As far as we can tell, this celebrity couple is still happily married!
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