In one word: No.
Selena Gomez is aware of the talk surrounding her new single, "Come & Get It," but she made it as clear as possible in a recent interview with Ryan Seacrest:
The song is NOT about Justin Bieber.
“Honestly, to be 100% real. It’s not really about a specific person," Gomez told the host, saying of why she released it:
”I wanted this to be the first single was because it exudes confidence and strength and that is something I’m willing to share with the world. That’s the place I want to be in and I want to represent something good and be a good example, so I think it’s fun.”
With rumors swirling that Gomez simply can't let Bieber go, texting him and calling him despite their status, Seacrest asked Selena whether she was dating anyone at the moment.
"I am available."
You heard her, young fellas! Good luck!