15 Celebrity Couples That Started Dating When It Was Illegal

Kylie Jenner & Tyga

Even though Kylie and Tyga denied that they were together for a LONG time, they were spotted out together and photographed as a couple before Kylie turned 18 years old in August 2015.

The controversial couple was first seen together in fall 2014, but they denied rumors of a romance 'til basically when the clock struck midnight on Kylie's big 1-8.

Photo: Instagram (@kyliejenner)

Bella Thorne & Gregg Sulkin

After knowing each other for six years, Bella and Gregg officially became a couple in summer 2015. The problem: Bella was 17 years old and Gregg was 23 years old when they first stepped out as a pair.

In August 2015, the duo even shared a sweet kiss at the Teen Choice Awards, which further proved their coupledom. Bella turned 18 years old in October, so at least there's that.

Photo: Instagram (@bellathorne)

Liam Hemsworth & Miley Cyrus

Liam and Miley met while co-starring in The Last Song when Miley was only 16 years old. The two were lovers in the film, so it wasn't that surprising when the on-screen romance lead to a real-life relationship.

Although the two tried to keep it secret, she was underage after all, their relationship became public in November 2009, when Miley was 16 turning 17 and Liam was 19 years old.

They were much more open about their relationship in 2010 — when she was still underage until the end — which is the same year they had their first breakup.

Photo: Twitter (@mileycyrus)

Miley Cyrus & Justin Gaston

Liam wasn't the first guy that Miley dated that was older than her. In 2008, when the "Wrecking Ball" singer was only 15 years old, her dad set her up with Justin, who was a 20-year-old underwear model.

The two began dating and, despite the fact that Miley was nowhere near legal, her parents fully supported the relationship. At the time, Billy Ray Cyrus called the relationship, "a good thing." Way to be supportive, Dad.

Photo: WENN

Selena Gomez & Justin Bieber

People often forget that, although Jelena was SO cute together, Selena was robbing the cradle when they first became a couple!

When Selena and Justin first began dating back in 2010, JB was only 16 years old. Selena was only 18 years old, but that means she was legal and he wasn't! The couple broke up in 2012, after dating for two years, but they have been on-and-off since 2013 and they still make us wonder if there will ever really be an end to Jelena.

Photo: Instagram (@justinbieber)

Zoey Deutch & Avan Jogia

The Vampire Academy actress and the former Victorious actor are one of the hottest young couples in Hollywood right now. Despite the fact that they keep their relationship under the radar, these two have been dating for a LONG time. In fact, when the two first stepped out as a couple at the 2012 Kids Choice Awards, Zoey was only 17 years old to Avan's 19. Wowza.

Photo: Instagram (@jogia)

James Lowe & Lorde

James and Lorde have never been shy about their relationship. Yes, they do keep their romance pretty quiet, but it's not because there is an age difference; they're just private people. However, that doesn't negate the fact that Lorde was 17 years old when she began dating her longtime beau, who was 24 years old at the time.

Photo: Instagram (@lordemusic)

Sasha Pieterse & Hudson Sheaffer

In December 2015, Sasha and her longtime boyfriend, Hudson, got engaged. The crazy part is that Sasha is only 19 years old, and her fiancé is 26 years old. While that's perfectly acceptable, they began dating 3 years ago. If you do the math, then that may change your mind about acceptability.

Photo: Instagram (@sashapieterse27)

Dove Cameron & Ryan McCartan

These two met as co-stars on Disney Channel's Liv and Maddie, where they play love interests. After Ryan finally got up the courage to ask Dove out, the two quickly became an item in August 2013. They've now been together for more than two years and they do everything with one another.

The illegal part is that Dove was pretty young; she was 17 years old when they went on their first date, while Ryan was already 20 years old.

Photo: Instagram (@dovecameron)

Demi Lovato & Wilmer Valderrama

Recently, Dems posted a photo in honor of the couple's sixth anniversary, seemingly stating that the two began dating in January 2010... when Demi was 17 years old and he was days short of turning 30.

Soon after, she backpedaled her statements, saying, "Everyone thinks it's our six-year anniversary. We met six years ago!" She clarified, "He had some hesitations. Once I got older, we could be together."

However, there is the fact that he's been known to be attracted to younger women girls, so we're not entirely convinced of her explanation.

Photo: Instagram (@ddlovato)

Wilmer Valderrama & Lindsay Lohan

Back in 2004, Lindsay was already getting a bad girl reputation, when she became linked to the That '70s Show actor. Wilmer was 24 years old, while Lindsay was only 17 years old when they were first seen together. They didn't officially admit to being a couple until Lindsay was 18, but they had already been seen out and about as a pair.

Once they went public, Wilmer told reporters, "We try to keep it more under wraps because it is a lot more meaningful that way." It also helped to keep it under wraps because it was, you know, illegal!

Photo: Chris Weeks/Getty

Wilmer Valderrama & Mandy Moore

Wilmer again?? Apparently, his first young romance (that we know of) was with the A Walk to Remember actress back in 2000. Mandy was only 15 years old when she met the actor, and the ripe age of 16 years old when they officially became an item. Wilmer was 20 years old when they dated and he later admitted that he took Mandy's virginity. The couple was together for two years and broke up in 2002. Maybe she got too old for him.

Photo: John Shearer/Getty

Kenzie Dalton & Chad Michael Murray

After getting a divorce from his One Tree Hill co-star Sophia Bush in 2005, Chad began dating Kenzie, who was an extra on the series. In 2006, when the two hooked up, Chad was 24 years old, while Kenzie was only 17 years old. Once their relationship was out in the open, things got serious, fast. After two months of being an item and soon after Kenzie's 18th birthday, the two lovebirds got engaged! They had a 7-year engagement before breaking up for good in 2013.

Photo: WENN

Hayden Panettiere & Milo Ventimiglia

On Heroes, Hayden played Milo's niece, but in real life, they were a couple for a few years. Hayden was only 17 years old when she started spending time off screen with Milo, who was 29 years old at the time. Because of their age difference, the pair denied their private relationship, which began in 2007. According to reports, a few months after Hayden's 18th birthday, the couple was spotted in Los Angeles holding hands. The co-stars broke up in 2009, after their romance fizzled out.

Photo: WENN

Paul Walker & Jasmine Pilchard-Gosnell

Before Paul's untimely death in November 2013, he was romantically involved with a college student named Jasmine, who was way younger than him. When he died, she was 23 years old, which is legal (he was 40 years old), but they reportedly began dating in 2006. That means that when they first became a couple, Jasmine was only 16 years old and the Fast and the Furious star was 33.

Photo: Joe Alvarez/WENN