Selena Gomez Refers to Justin Bieber as 'Family'

Just a slip of the tongue? Or wishful thinking?

Asked Thursday if she would collaborate musically with rumored boyfriend Justin Bieber, Selena Gomez referred to the 16-year-old pop sensation as "family."

"I always say I don't want to mix in family with work," she told people on set for the taping of the 100th episode of Wizards of Waverly Place.

But it doesn't sound like Gomez, 18, is ruling out a duet just yet.

"I think that it would be fun," she says. "I definitely would be open for it."

One thing's for sure – we'll be keeping an ear open for what's sure to be a chart-topper from the teen power couple.