It lasted only 21 months, but Julia Roberts says her marriage to singer Lyle Lovett was not a mistake. “Mistake, no. Miscalculation, yes,” Roberts told New York’s Daily News. “Never a mistake. Too many great things came out of it.” Roberts and Lovett remain especially close, even though she’s been dating Benjamin Bratt of “Law & Order” for quite a while. (The interviewer said Julia went “limp” at the very mention of Bratt’s name.) “We’re bound like no other,” she says of Lovett. “We have this great shared experience that never had any nasty moments. What we had doesn’t come close to the mistake category.”