Who says Selena Gomez and Niall Horan are an item?
After 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 tell ET they may or may not have kissed.
One source at the soiree says, "I didn't see them kiss, but they were super close all night long."
However, another source tells ET, that the two definitely locked lips. "They tried their best to keep to themselves in their private booth behind the DJ table in the main room but that was not happening. Selena seemed super into it," the source adds.
Another eyewitness reveals to 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 frined, 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.
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.
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.
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."