Hugh Hefner and Kendra Wilkinson

Hugh Hefner's getting cold feet about a wedding — not his, but Kendra Wilkinson's.

Though he has vowed to walk his ex down the aisle at her June nuptials to Philadelphia Eagles wide receiver, Hank Baskett, Hefner admits he may have a hard time letting her go.

"There may be a moment at the ceremony when I have second thoughts...may have to negotiate this," he told E!'s Daily 10.

The Playboy mogul is already losing Wilkinson this week — she will officially move out of the Playboy mansion, where Hefner will hold her wedding and reception. Wilkinson's Girls Next Door housemates, Bridget Marquadt and Holly Madison (another Hef ex), will serve as bridesmaids.

Don't feel too bad for Hef though. He's since hooked up with 19-year-old twins, Karissa and Kristina Shannon.

"Nothing has been the same [since the] two very lovely twins walked into my life," he said.