Irina Shayk‘s kissing a new dude in a picturesque Italian courtyard … making out with Michele Morrone on Saturday — but, it’s all just for show!

The model was spotted sucking face with the Italian actor and singer in Napoli … engaging in some intense PDA while filming a new ad for Dolce & Gabbana.

Check out the clip … it starts out hot and heavy — but, ends abruptly when someone seems to call cut from behind the camera.

Irina and Michele are both dressed to the nines here … not surprising given that the ad is for D&G — only the best for these two star-crossed advertising lovers.

Shayk’s been in some seriously big relationships with stars in the past … she shares a child with Bradley Cooper and had a short-lived fling with Tom Brady — so, her and Michele hooking up isn’t a crazy thought.