Khloé Kardashian posted a video to Instagram Stories on May 21.
The Blink-182 drummer, 46, licked the Kardashians star's right cheek.
While cameras flashed, he kissed Kourtney on the cheek as she held a wine glass.
The saliva-filled PDA came before the couple's upcoming Portofino wedding.
A day earlier, Kardashian-Jenners were spotted in the coastal village.
Mason, Reign, and Penelope Disick were photographed with mom and dad on a boat.
Khloé, 37, Kim Kardashian, Kylie Jenner, and Kendall Jenner attended an upscale dinner that evening.
Kourtney and Travis married in Santa Barbara on May 15. They were joined by Kardashian's grandmother Mary Jo Campbell and Barker's dad Randy.
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