Blake Shelton and Gwen Stefani have been inseparable during the holidays.

Last month, the couple spent some time in the country singer's hometown in Oklahoma where the No Doubt frontwoman reportedly met Shelton's mother.

The two were also seen at the house of Stefani's father a week before Christmas, and now, it looks like the pair is getting closer than ever. They were recently seen spending time with Stefani's family, including her sons.

According to E! Online, the 46-year old singer and Shelton were seen on Tuesday, Dec. 29 at two of her favorite restaurants in Anaheim, California, where she grew up. The two were reportedly joined by several of her family members, including her parents and her three sons, Kingston, 9, Zuma, 7, and Apollo, 1.

The website reports that the group first went to Mama Cozza's Italian Restaurant, and a source told E! News that the group was laid-back and was fine with everything.

"They walked in about 7-ish last night. Not demanding at all. They ate pizza—it's what they always order," said the source, adding that some of them went to school with the "Used to Love You" singer and that she was a regular there.

The group next went to Cortina's Italian Market and Pizzaria, where they spent about an hour at the market, added the source. The celebrity couple was "very kind and so down to earth."

"They took pictures with whoever asked them and didn't mind," said the insider.

One of the lucky fans who got to take a photo with the duo was Jacob Scott Troch. He took to Instagram to share the shot.

Troch captioned the image, "My eyes are closed but who cares! Just helped out Gwen Stefani and Mr. Blake Shelton!"

In the picture, Stefani is wearing a green plaid skirt, a black turtleneck top and a black jacket. She accessorized her look with a red bag and a baseball cap. Shelton was also casually dressed in a checkered shirt, blue jeans, and a baseball cap.

According to a Hollywoodlife source, Stefani's parents are happy that she has found love with Shelton.

"Everyone thinks that Blake is the coolest and a very fun, loving guy," said the source. "They like him a lot."