The 64-year-old Cabaret star, who has been married four times, revealed that she feels comfortable being on her own for the first time in her life.
"I don't have somebody telling me to 'Be quiet! " Minnelli explained to Bang Showbiz. "There's none of that in my life anymore.
"It's just so wonderful not to be tied down. I've never been not dating or not with someone or not in love.
"I thought for a long time that unless you were with somebody you weren't accepted," she added, before insisting that she will never marry again.
Minnelli's most recent marriage to concert promoter David Gest ended in 2007 after five years.
Last month, Minnelli was awarded both the French Legion of Honour and the 'Icon Award' at the Nordoff Robbins Silver Clef Awards for her contributions to the entertainment industry.
Watch a clip of Liza Minnelli's iconic performance in Cabaret below: