The handsome 34-year-old actor, who is beloved by female fans, was most recently reported to be dating the 2010 Miss Reykjavik - Íris Björk Jóhannesdóttir, who was crowned the country's beauty queen a few years back at age 20.
Over the year, Chris has been linked to beauties like Audrina Patridge, Olivia Munn and Dominique Piek. He most recently attended a Coldplay concert with Zoë Kravitz, Lenny's 25-year-old daughter. The two were also spotted at parties for Tom Ford and W magazine during London Fashion Week last year.
But it was one lucky fan who was serenaded by Chris on Wednesday (Nov. 26), when she was asked to join Ellen and the actor on stage.
Eileen Lee from Irvine, California got to make her own request for a tune, and chose a song by legendary crooner Frank Sinatra.
Wearing navy blue trousers, a white T-shirt, a heather-gray blazer and brown leather dress shoes, the handsome star kindly obliged, looking suave as he sang a few lines from hit 1966 song Summer Wind.
The performance, complete with the actor swaying from side to side in true Frank Sinatra style, prompted Ellen to say "So, you're handsome, you sing, and are you single?"
Once his availability had been established, the TV host went on to comment on the star's impressive physique, showing a shirtless still photograph of him.
"Ellen, that's a lot of fake tanning," he said. "For the movies, you gotta look healthy."
Ellen then asked him to confirm whether his fans were indeed referred to as "Pine Nuts". "They are. Yes, indeed they are. Do you have a 'Pine Nut' here?" he asked in jest.