Blake Shelton and Gwen Stefani are in the beginnings of a relationship, a source confirms exclusively to PEOPLE.
"Blake and Gwen have begun dating," says the insider.
"They've been supporting each other through a difficult time and they're really happy together."
Shelton - whose rep also confirms the romance to PEOPLE - and Stefani kicked romance rumors into overdrive over Halloween weekend when they were spotted together at various parties.
"Everyone is thrilled because they're both incredibly nice people," adds the source.
Both stars ended long-term relationships this year, with Shelton and Miranda Lambert divorcing in July and Stefani and husband Gavin Rossdale announcing their split several weeks later.
