Selena Gomez and Niall Horan leave Jenna Dewan-Tatum's birthday party together

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Selena Gomez and Niall Horan Attend Jenna Dewan-Tatum's Birthday Party ... Together!

Who says Selena Gomez and Niall Horan are an item?

Despite reports that the two were making out at Jenna Dewan-Tatum's 35th birthday bash at Bootsy Bellows nightclub in Los Angeles on Friday, sources inside the party told ET that the two never kissed.

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One source at the soiree said, "I didn't see them kiss, but they were super close all night long."

Another eyewitness told ET that the "Good For You" singer and One Direction heartthrob looked "flirty." "He had his arm around her and was rubbing her back, and they were chatting close," the source said. Smooch or no smooch, they did arrive and then leave through the back door of the West Hollywood hot spot together.

Considering Gomez, 23, recently admitted that she wants to date older men, it's a bit of a surprise that she was spotted with the 22-year-old Irish singer.

Whether they're dating or not remains to be said, but the two were definitely among the A-listers who had a ton of fun at the party, which was held for both Dewan-Tatum and her best friend, Emmanuelle Chriqui, by both of their husbands. The fête was especially fun for Dewan-Tatum's beau, Channing Tatum, who was unsurprisingly spotted dancing up a storm. "He really brought it back to his Step Up days," a source said.

Photos of Justin Bieber and Selena Gomez together:

26 PHOTOS
Justin Bieber and Selena Gomez
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Selena Gomez and Niall Horan leave Jenna Dewan-Tatum's birthday party together
WEST HOLLYWOOD, CA - FEBRUARY 27: Singer-actress Selena Gomez and singer Justin Bieber arrive at the Vanity Fair Oscar party hosted by Graydon Carter held at Sunset Tower on February 27, 2011 in West Hollywood, California. (Photo by Michael Buckner/WireImage)
UNIVERSAL CITY, CA - JULY 22: Singer Justin Bieber and actress/singer Selena Gomez attend the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Kevin Mazur/TCA 2012/WireImage)
A security agent (L) escorts Justin Bieber and Selena Gomez as they arrive for the premiere of 'Katy Perry: Part Of Me,' at Grauman's Chinese Theatre in Hollywood, California June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)
LOS ANGELES, CA - APRIL 17: Selena Gomez (L) and Justin Bieber attend a basketball game between the San Antonio Spurs and the Los Angeles Lakers at Staples Center on April 17, 2012 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)
Singers Selena Gomez and Justin Bieber arrive at the American Music Awards, in Los Angeles, California, on November 20, 2011. AFP PHOTO/VALERIE MACON (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CA - APRIL 17: Selena Gomez (L) and Justin Bieber kiss at a basketball game between the San Antonio Spurs and the Los Angeles Lakers at Staples Center on April 17, 2012 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)
LOS ANGELES, CA - NOVEMBER 20: Selena Gomez and Justin Bieber arrives at the 2011 American Music Awards at Nokia Theatre L.A. Live on November 20, 2011 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - NOVEMBER 20: Selena Gomez and Justin Bieber arrives at the 2011 American Music Awards at Nokia Theatre L.A. Live on November 20, 2011 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
PARIS, FRANCE - NOVEMBER 09: Singers Justin Bieber and Selena Gomez are sighted arriving at the 'Louis Vuitton' store on November 9, 2011 in Paris, France. (Photo by Marc Piasecki/FilmMagic)
BELFAST, NORTHERN IRELAND - NOVEMBER 05: MTV Europe Music Awards Hostess Selena Gomez and singer Justin Bieber arrive to attend the MTV Voices Dinner during the MTV Europe Music Awards 2011 at the Merchant Hotel on November 5, 2011 in Belfast, Northern Ireland. (Photo by Jeff Kravitz/FilmMagic)
LOS ANGELES, CA - NOVEMBER 20: Selena Gomez and Justin Bieber in the audience at the 2011 American Music Awards at the Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2011/FilmMagic)
ATLANTA, GA - SEPTEMBER 17: ****EXECUTIVE COVERAGE**** Justin Bieber, Selena Gomez and Usher Raymond backstage at the 33rd Annual Georgia Music Hall Of Fame Awards at the Cobb Energy Performing Arts Center on September 17, 2011 in Atlanta, Georgia. (Photo by Rick Diamond/Getty Images)
HOLLYWOOD, CA - SEPTEMBER 15: Justin Bieber and Selena Gomez attends the 'Abduction' Los Angeles Premiere at Grauman's Chinese Theatre on September 15, 2011 in Hollywood, California. (Photo by Steve Granitz/WireImage)
Justin Bieber and Selena Gomez arrive at the The 28th Annual MTV Video Music Awards at Nokia Theatre L.A. LIVE on August 28, 2011 in Los Angeles, California.
LOS ANGELES, CA - AUGUST 28: Justin Bieber and Selena Gomez arrive at the The 28th Annual MTV Video Music Awards at Nokia Theatre L.A. LIVE on August 28, 2011 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
Singer/actress Selena Gomez and singer Justin Bieber attend the 2011 Teen Choice Awards at Gibson Universal Amphitheatre on August 7, 2011 in Universal City, California.
(EXCLUSIVE, Premium Rates Apply) (EXCLUSIVE) Musician Justin Bieber and actress Selena Gomez attend The 2011 ESPY Awards held at the Nokia Theatre L.A. Live on July 13, 2011 in Los Angeles, California.
Justin Bieber and Selena Gomez on stage at the 22nd Annual MuchMusic Video Awards at the MuchMusic HQ on June 19, 2011 in Toronto, Canada.
DALLAS, TX - JUNE 07: (L-R) Kenny Hamilton and Singers Justin Bieber and Selena Gomez attend Game Four of the 2011 NBA Finals between the Dallas Mavericks and the Miami Heat at American Airlines Center on June 7, 2011 in Dallas, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement (Photo by Mike Ehrmann/Getty Images)
STRATFORD, CANADA - JUNE 03: Justin Bieber and Selena Gomez seen on the streets of Stratford on June 3, 2011 in Stratford, Canada. (Photo by Central Image Agency/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 27: Actress Selena Gomez and Justin Bieber arrive at the Vanity Fair Oscar Party 2011, February 27, 2010 at the Sunset Tower Hotel in West Hollywood, California. (Photo by Gregg DeGuire/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 27: Actress Selena Gomez and Justin Bieber arrive at the Vanity Fair Oscar Party 2011, February 27, 2010 at the Sunset Tower Hotel in West Hollywood, California. (Photo by Gregg DeGuire/FilmMagic)
LAS VEGAS, NV - MAY 22: Singers Justin Bieber (L) and Selena Gomez pose during the 2011 Billboard Music Awards at the MGM Grand Garden Arena May 22, 2011 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)
LAS VEGAS - DECEMBER 31: Singers Selena Gomez (L) and Justin Bieber perform during Dick Clark's New Year's Rockin' Eve With Ryan Seacrest 2010 at Aria Resort & Casino at the City Center on December 31, 2009 in Las Vegas, Nevada. (Photo by Kevin Winter/DCNYRE2010/Getty Images for DCP)
LAS VEGAS - DECEMBER 31: Singers Selena Gomez (L) and Justin Bieber attend Dick Clark's New Year's Rockin' Eve With Ryan Seacrest 2010 at Aria Resort & Casino at the City Center on December 31, 2009 in Las Vegas, Nevada. (Photo by Kevin Winter/DCNYRE2010/Getty Images for DCP)
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A slew of hot Hollywood couples were also in attendance, including Mila Kunis and Ashton Kutcher, Adam Levine and Behati Prinsloo, and Jessica Alba and Cash Warren, as well as singing celebs like Horan and Lea Michele.

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A few of them even took to social media to share snaps from inside the star-studded bash.

prom photo

A photo posted by Jenna Dewan Tatum (@jennaldewan) on

90s is all I got. πŸ‘½

A photo posted by Behati Prinsloo Levine (@behatiprinsloo) on

πŸ’‹πŸ’‹πŸ’‹πŸ’‹

A photo posted by Lea Michele (@leamichele) on

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Horan posted a group photo that included Gomez on Twitter with the caption, "LA squad," but later deleted it. His friend, Raquelle Stevens, however, also shared the adorable shot.

Twitter

In more Gomez news, the former Disney actress graced the cover of InStyle UK's January issue. In the tell-all interview with the magazine, she opened up about her dating life, including her on-again, off-again relationship with Justin Bieber and rumors that she was romantically linked to Horan's bandmate, Zayn Malik.

"I hate it. It's hard," she said about getting back into the dating game. "I'm weirded out by the idea that a guy has Googled me before we meet, and that has happened."

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