Following the news about David Foster and Katharine McPhee's intimate Nobu dinner in Malibu, the rumored couple were seen again when they stepped out together during Foster's 68^th birthday on Nov. 1. The music mogul and songstress were spotted at Craig's, apparently the composer's favorite place, together with his daughters Sara and Erin Foster and stepsons Brody and Brandon Jenner.

An E! News source described it as a "really nice dinner" with everyone joking around and enjoying Craig's famous chocolate pizza while they sing Foster a "Happy Birthday" song. It was also reported that Foster and McPhee left together that night in one vehicle. Although the duo has yet to confirm their rumored flame, their excessive public display of affection while in Malibu last May seemed to confirm that something is going on between the two of them.

Articles about their "date night" circulated everywhere in Hollywood. According to Daily Mail's insider, over two bottles of red wine and sushi, "David was kissing Katharine on the cheeks for several times." The latter reciprocated, acting like they were indeed a couple.

Roughly two months ago, Erin, Foster's daughter, took a Snapchat photo of his father and the 33-year-old songstress while they were having a conversation. She captions, "Excited about my new step mom," obviously referring to the singer. Her post was quickly followed up by an Instagram story video of a singing McPhee as Foster plays the piano. The caption says, "My parents" with a family emoji.

Despite their silence on their supposed love affair, a US Weekly source confirmed last month that the two are actually dating, albeit not exclusively. McPhee and Foster first met in 2006 in "American Idol" when McPhee was still a contestant and Foster was her mentor. They have remained close since then.