Blake Shelton and Gwen Stefani -- Maybe It's Real

Blake Shelton and Gwen Stefani may be the real deal, because not only is sweeps over, the show's done too ... but they're still together.

Blake and Gwen left the after-party for "The Voice" Tuesday at Avalon in Hollywood, and they sure seemed together.

As for how long it will last ... the bets are on.