Millionairess Cheryl Mercuris is returning to the Hamptons this summer, after spending a record-breaking $500,000 for a two-week rental last year to try landing the love of her life. Blond beauty Mercuris, a single mom who made her own fortune in direct marketing, is returning to the same 14-bed Bridgehampton estate, Sandcastle, this time for a month. Mercuris, who’s still single and has moved to Manhattan from Tampa, told us: “I have rented the same house for the whole month of July and am looking forward to it.” She declined to reveal the likely huge cost of the rental: “That is confidential.”