Is this the end for Portuguese football superstar Cristiano Ronaldo and his longtime girlfriend Russian swimwear model Irina Shayk?

Questions arose when a YouTube video of the brunette beauty surfaced with her dancing provocatively for another man -- one who isn't Ronaldo. Sure, there's no denying that she looks amazing (hot!) in the video, but what does this mean for the once-blissful pair?

Fear not, for Irina has been loyal as ever -- this video is actually a new advertisement campaign for Agent Provocateur, known for their sexy lingerie, smoking hot models and racy commercials. The ad is to showcase the British retailer's L'Agent collection.

The man in said video is Spanish actor Miguel Silvestre, and the video itself is written and directed by the very famous Penelope Cruz -- her directorial debut. The video lasts for six minutes and gives viewers a peek at what the line has to offer this year. The collection can be fully viewed at their official site.

Cheating rumors have been pretty common inthe Ronaldo-Shayk household, with Ronaldo recently accused of cheating on the sexy model with Miss Butt Brazil runner-up (also known as Miss BumBum) Andressa Urach. After denials by the footballer via Twitter and Facebook, things went back to normal. The couple are now into the third year of their relationship, with Shayk doting on Ronaldo's son Cristiano, Jr. and treating him like a mother would.

This is not Shayk's only project this year. Her acting debut will be as Hercules' wife in the upcoming 2014 movie Hercules: The Thracian Wars. She is also lending a helping hand in a mental hospital in her hometown of Yemanzhelinsk -- she and her sister helped rebuild the hospital's children's ward, and the model is now raising funds for a Russian charity called Pomogi ("help" in Russian) to aid sick children. Shayk is the official ambassador for the charity.