These two really seem like they're an item! After spending the weekend side-by-side at Halloween festivities, Gwen Stefani and Blake Shelton have jetted off to Nashville, TN. to spend some time together. Things are getting hot and heavy with these two!

"They are hanging out and having fun together," a source tells People.

Over the weekend, Shelton and Stefani attended George Clooney's Casamigos Halloween party together and then hopped over to Jared Leto's bash. At Leto's soiree some partygoers caught the twosome canoodling and holding hands.

Shelton is in the country musical capital for the CMAs tonight -- and it looks like Stefani didn't want to spend a minute apart from her rumored new beau and fellow Voice coach. It may be an awkward encounter -- seeing as how Miranda Lambert's also on the bill for the awards show. Both country stars are up for multiple awards!

UPDATE - Gwen's publicist tells Stefani and Shelton are officially dating! "Gwen and Blake are longtime friends who have very recently started dating," Stefani's rep confirmed.