Has the Hollywood dating pool shrunk to the size of a birdbath? Eyebrows shot sky-high over the weekend when surfer Kelly Slater tussled with paparazzi while making the scene in Tel Aviv with Bar Refaeli, the model who took Gisele Bundchen's place on Leonardo DiCaprio's arm shortly after the Brazilian bombshell rebounded with the bald-pated wave rider.

Refaeli's quality time with Slater immediately sparked speculation there was trouble afoot in her low-key, year-plus romance with the modelizing actor, a rift confirmed by a mole "close to the couple," who informs People they have parted ways "on great terms."

"The relationship ran its course," explains the insider. "It's bad enough having a cross-country relationship, but it's obviously a lot more difficult trying to maintain a relationship across oceans, and across continents, when both of them are very busy."

Concludes the sound bite-savvy source, "He's a great guy, and she's very sweet. These things happen. They had fun."

DiCaprio, 32, hooked up with Refaeli, 22, in the spring of 2006, several months after his fickle, five-year romance with Bundchen went belly-up. The leggy supermodel was soon seen snuggling up with Slater, a liaison that lasted about eight months.

But is the surfing champ making a habit of swooping in on DiCaprio's comely castoffs when they're at their most vulnerable?

Apparently not.

Slater, who was in Israel as part of a bridge-building surf camp with Israeli and Palestinian kids, asserts to E!'s "Daily 10" that he's not wooing Refaeli.

He says he simply bumped into the looker at a local club and hitched a ride with her back to his hotel.

As for Bundchen, she remains hot and heavy -- and how -- with New England Patriots star Tom Brady.

The genetically superior squeezes were snapped spit-shining each other's tonsils while clubbing in Miami Sunday night, perhaps in celebration of the quarterback's team-record six touchdown passes against the Dolphins earlier that day.

"It was almost embarrassing to watch," an eyewitness to their blatant nuzzling tells the New York Daily News. "She was holding his face, and they kept kissing all night. They ignored everyone. But they wore matching outfits, jeans and white tops, and looked cute together."

The next day, it was more of the same, according to the Boston Herald, which says Gisele and Tom tangled tongues -- and passed each other a piece of gum -- while catching some rays at the swanky Setai Hotel.

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