Bella Thorne
Bella Thorne celebrates her 20th birthday with bizarre photo with Tana Mongeau. Pictured: Thorne attends the premiere of MTV And Dimension TV's "Scream" at Regal Cinemas L.A. Live on June 14, 2015 in Los Angeles. Getty Images/Jason Kempin

Bella Thorne just turned 20 and celebrated her birthday by tonguing her rumored girlfriend, Youtube star Tana Mongeau.

The YouTuber took to Instagram to share a clip of herself and Thorne licking each other's tongue. "ur weird i'm weird i like u @bellathorne," Mongeau wrote in the caption.

According to E! News, the two have been rumored to be dating since September, after Mongeau shared a photo of them kissing. "Life is beautiful mineeee," Mongeau wrote in the caption.

The "Famous in Love" star also seemed to confirm their relationship when she shared the same photo on her Instagram account and wrote, "Mmmmm tastes like candy."

Aside from her bizarre photo with Mongeau, Thorne also shared a photo of herself on Instagram showing off her new look to commemorate her 20th birthday. "Yes I changed my hair again and yes I'm 20!!! Let's go libras met so many people last night that had the same bday as me it was awesome. Happy bday guys!!!" she wrote in the caption.

Back in August 2016, Thorne confirmed that she is a bisexual by sharing polaroid photos of herself kissing a girl. One fan asked if she was a bisexual, and the "Shake It Up" star answered, "Yes," according to Daily Mail.

Although Throne is bisexual, she seems to lean more towards guys as she has dated more men than women. She recently clarified that she is open to going out with girls, but she is finding it more difficult than dating men because women are harder to read.

"It's so hard. I can't tell if a girl is trying to be best friends with me or if she wants to get with me or if she just wants social media followers. I'm just so confused when a girl talks to me. Girls can be very flirtatious, so I don't want to make a move, and then you be like, 'Whoa, girl. Not what I was thinking, I don’t roll that way,'" she told StyleCaster. "Then it's so awkward. So I end up usually dating more guys because with guys, I know if a guy's hitting me up. They're not just texting me to be my bestie. I know they want something, of some sort."

Thorne was previously linked to Kourtney Kardashian's ex, Scott Disick. The pair was spotted at a luxury private villa during the Cannes film festival in France back in May. However, their romance was shortlived because the singer was turned off by the "Keeping Up with the Kardashians" star's hard-partying habit.

"Scott is really nice, sweet, charming. I don't drink, and he really drinks a lot. And it just ended up… I just wasn't down. I was like, 'I gotta leave,'" Thorne said about her and Disick.