Two sources tell PEOPLE that Kardashian's BFF Brittny Gastineau, 31, and magician David Blaine, 41, felt the love in the European air.
"They were flirty all night Friday at the rehearsal dinner and on Saturday," says one guest.
"There was definitely something there between them," says another guest who adds, "They left the wedding together that night."
And there's an old proverb: One wedding begets another. So could this be a lasting love? "They definitely made a connection," says the first source. "But who knows what will happen."
But no word on whether or not Kardashian, 33, tossed her white bouquet and if Gastineau was the lucky recipient.