Wiz Khalifa and Amber Rose get close as they attend Kevin Hart's "Laugh At My Pain" feature film black carpet premiere at the Pacific Design Center in West Hollywood. (Sept. 7, 2011)

*After photos surfaced of Wiz Khalifa and Amber Rose slow-dancing in Las Vegas last week, the blogosphere became rife with talk of a possible quickie Sin City wedding.

But Billboard.com is citing “a reliable source” who says Wiz and Amber have not tied the knot. They “were simply celebrating Wiz’s birthday with close family and friends in Vegas.”

The happy couple flew to Vegas to celebrate Wiz’s 24th birthday with close ones and did not get married.

Meanwhile, the lovebirds are currently working on several projects. While on the 2011 MTV VMAs black carpet, the couple told Billboard.com that they’re working on music together.

“We’re working on some music for me, yeah,” Rose said. “It’s going to be mysterious,” Wiz added. “It’s going to be very mysterious,” Amber Rose said. “You may not even know it’s me. We might just throw it out there, might give it out and see what’s up.”