Josephine Santos, PacificCoastNews.com

Selena Gomez is still single, people!

And that's despite the best efforts of some overzealous bloggers, who seem intent on making it look like she's moved on from Justin Bieber with her old pal Alfredo Flores.

The two were spotted last night walking arm-in-arm at the Warner Music Group/InStyle Grammy after party at Chateau Marmont in West Hollywood.

Are Justin Bieber and Selena Gomez back together?

"He's just a friend," a source tells me. "She's known him since before dating Justin."

Earlier in the evening, Gomez was spotted dancing at Justin Timberlake's late-night show at the Palladium in Hollywood.

"He's bringing sexy back," she tweeted along with a pic of her and gal pal dancing. "And it's about time!! @jtimberlake killed it!"

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Check out all of the 2013 Grammys' party pics