Marc Malkin

Has Selena Gomez been writing songs about her rumored boyfriend Nick Jonas?

A source claims that back in February, the star of Disney's Wizards of Waverly Place wrote a song inspired by the youngest brother of the hitmaking Jonas Brothers trio.

"They were writing lyrics for the bridge, and she was saying how Nick makes her so mad when he doesn't call her back," the source tells E! News about the tune, titled "Head First." "The verse was definitely written about Nick Jonas."

The source claims (as did People magazine yesterday) that Gomez, 16, and Jonas, 15, have been an item for several months.

Gomez's rep, however, insists the two are nothing more than a couple of good buddies.

"She is friends with all of the Jonas Brothers," the rep said. "Her best friend, Demi Lovato, is on tour with them, so it makes sense that she's been at some of their shows."

Just last month, Gomez predicted her personal life would undoubtedly become tabloid fodder. "Sometimes you can get caught up in the media, but I've just learned to not let it bother me, and I know that it's only going to get worse," she told me. "I think that with the support of my friends and family, that's all I need to pull me through."