Blake Shelton-Gwen Stefani Update: 'The Voice' Co-Hosts Photographed Showing Serious PDA During Date Night

Blake Shelton and Gwen Stefani may be good at dodging questions about their rumored relationship, but they're not so good at dodging the paparazzi. The pair were recently spotted engaging in a little PDA after sharing date night with another couple. While neither host of NBC's "The Voice" has commented on the photos, sources say it was more than just a friendly dinner.

According to E! Online the pair were spotted at Casa Vega Mexican restaurant in Studio City, California, on Tuesday with another unnamed pair. Sources said Shelton, 39, and Stefani, 46, were waiting for the valet to return with their car when the recently-divorced country super star decided to get a little handsy. The rumored couple were reportedly kissing as Shelton grabbed at the "Used To Love You" singer's butt. The source also told E! Shelton was seen trying to get a laugh from the group, putting on a little impromptu square dance show. Stefani reportedly joined in briefly. Nearby paparazzi were able to snap a few photos.

"They were there with another couple and were waiting for valet for about five minutes. He kissed her twice and was pretty much grabbing her butt as he did," the source said. "He was square dancing to amuse the group, and Gwen joined in for a bit, too."

While the photos only show Shelton and Stefani getting cozy outside the establishment, E!'s source claims they were plenty public with their affection inside as well. The group reportedly appeared to be in "high spirits" during dinner, which took place at the restaurant's bar. Shelton is said to have had his arm around his rumor girlfriend while sipping away on some margaritas. The duo are said to have left dinner and returned to Stefani's home.

While things appear to be heating up for "The Voice" couple, Miranda Lambert couldn't be more cool. According to a recent report the "Over You" songstress feels her ex-husband is trying to "push her buttons" by flashing his relationship with Stefani in her face. She feels it's "not authentic" and "ridiculous."

Their romantic restaurant trip is just the first of two public displays of affection Stefani and Shelton have shared this week. On Tuesday Stefani tweeted a photo of herself alongside "The Voice" co-coaches Pharrell Williams, Adam Levine and Shelton. While Williams smiled for the camera and Levine stared longingly into the distance, Shelton opted to take a bite out of Stefani's shoulder. Not long after the photo was posted the Internet was abuzz with chatter about the couple's adorable on set moment.