Paris Hilton was assumed to be dating Alex Vaggo when she took him to dinner, then spent the night with him afterwards at a hotel. It looks like Alex was just paying his dues, since Paris got him a modeling job so he wouldn’t have to work as pizza boy anymore. It’s tough to make an honest living. Since Paris is still single, and on the hunt, but not finding many takers these days, she decided to STALK her ex boyfriend Stavros Niarchos. At Britney’s birthday get together the other night, Paris had been reported to be upset that she didn’t catch Stavros before he left. Page Six reports on Paris and her stalking behavior in Miami:

Hilton first ran into him [Stavros] at Mansion Wednesday night, where he was paid to host the official Art Basel kickoff party. When the Greek shipping heir showed up with Brandon Davis’ ex-girlfriend, Caroline Vreeland, however, Hilton was not pleased.

"Paris beelined for Stavros, but he was chatting up Caroline," said our source. "He was completely ignoring Paris, and she was furious. She shot them evil looks and finally stormed up to them and started screaming at Caroline."

On Thursday, the celebutard followed Niarchos to three different clubs. One partygoer at Mokai, where the rich kids started their night, told us, "Paris saw that Stavros was with a girl, and she went crazy. She literally stood on Stavros’ table and began screaming at him. Then she started dancing and trying to get his attention."

The insider said that when Stavros and his date left Mokai and moved on to Set, Hilton followed: "Paris went to great lengths trying to get Stavros’ date kicked out, begging club security to get rid of the girl." Our witness even claimed, "Paris was so furious, she ended up walking up to the girl and just punched her."

The picture above shows Stavros (crap for brains) Niarchos making out all hot and heavy once Paris finally trapped him in a corner. Paris’ rep denies she punched anyone, but I really hope she did. I want to see the pictures, a nasty lawsuit, and Paris back in jail.

I’m not a doctor, but it looks like Brandon Davis got punched in the eye. I got every question on the medical board right about vaginas, and still they didn’t give me my medical license. I’m not shallow, I know a little about eyes too.

After being cut off from the family fortune last week due to his out of control partying, Brandon Davis went to Miami to stay with Scott Storch, and is living off his friend’s generosity like a loser does. He’s hanging with Kim Kardashian in Miami on June 12 pictured above. Here’s more:

Several sources said Davis – who once hounded Lindsay Lohan for not having money and called her a "firecrotch" – has been financially cut off by his wealthy family for not being able to get his act together, and pals like Paris Hilton and Stavros Niarchos aren’t taking his calls.

"His family cut him off for using and abusing," our in-the-know spy said. "He had promised to get his act together, but obviously never did."

After Davis was caught railing against Lohan on camera last year, his family sent him to rehab, where he was treated for drugs and booze dependency. But a week after he left the clinic, the oleaginous heir was back out on Los Angeles streets partying, and he hasn’t stopped since.

After being cut off by his family last week, Davis flew to Miami to take refuge with puerile music producer Scott Storch.

"He’s been staying at Scott’s, but shows up every day at Mokai and the Shore Club," snitched our source. Davis went out one night with Caroline Vreeland, but was soon dumped by the leggy blonde.

Another spy said Davis has been calling friends asking them to loan him $2,000 at a time. So far, he’s had no takers and is living on credit. His friends remember how he bounced a $10,000 check on "Girls Gone Wild" gazillionaire Joe Francis, and owes some other "friends" for gambling debts.

Last week, to shore up his spirits, Davis showed up at the Raleigh Hotel in South Beach, where he called the bar in advance to order six lemon drop shots, six mojitos and six Peronis so they’d be waiting when he arrived. He soon appeared with a blonde and a brunette, and went to work on the drinks.

Brandon really has no way to make money. He’s got nothing to offer. Even if he dressed up as a woman, and tried to sell himself on the street, guys would probably be too busy puking at the thought of getting it on with him to complete the transaction.

Brandon Davis is so unpopular, even his friends don’t want to be associated with him. The oil-heir grandson of the late Marvin Davis showed up to the Details magazine party March 29th at producer Mary Parent’s house in Hollywood and became enraged when he was denied access. According to a source, "he started demanding that staffers get Stavros Niarchos." The Greek shipping heir had evidently told Davis about the party and was already inside. But when staffers found Niarchos, he begged them to tell Davis that he wasn’t there, adding, "I didn’t invite him here, and I don’t really want to be around him." Niarchos then joined the other revelers. Davis eventually made such a fuss that he was allowed in, and Niarchos beelined to a Details editor to apologize, adding, "You know I would never bring him here."

Oil heir Brandon Davis is living beyond his means. The fat boy, whose family is worth billions, is being sued for allegedly ripping off a Bahamian casino for a barrel of cash during a weekend in January.

In a lawsuit filed in New Jersey, the Atlantis Paradise Resort and Casino claims Davis owes them $75,000, after checks that Davis wrote for a hefty casino marker were returned bearing the stamp "Non-Sufficient Funds."

According to the lawsuit, Davis was either "aware at the time that he presented the checks that his account had insufficient funds," or had borrowed the cash with "the intent and plan to order the Bank not to pay or honor the checks." Either way, the casino wants their money pronto. They’re even after Greasy for an additional $270 to cover the returned check fee.

Davis better not be wiping his butt with the casino’s money, or he’ll be bobby for dollars, and licking them clean.