Credit: FilmMagic

Country cuties!

Country Strong costars Leighton Meester and Garrett Hedlund may be making their onscreen romance a reality.

Whooping it up after the Golden Globes at HBO's party held at the Beverly Hilton Hotel's Circa 55 eatery, Meester, 24, and Hedlund, 26, were "inseparable the entire night," a partygoer tells exclusively.

As the duo chatted, "Garret wrapped his arm around her," the observer says. "She wraps her arm completely around his neck and pulls him for a quick peck on the lips."

When the pair called it a night, Hedlund was "massaging her shoulders" as they exited together.

Meester split with Gossip Girl costar Sebastian Stan last year and told Allure she wasn't a fan of playing the field.

"I don't see the point in dating," the star said. "I hate it. It's wonderful to be in love. And it's definitely wonderful to cuddle and have sex and get to experience life with somebody. But it's OK if you don’t find him and you're 24. You can find it someday."