The Cowboys & Aliens star, who filed for divorce from husband Tao Ruspoli in March, looked happy while lunching and window-shopping in Venice, Calif., together on Tuesday.
The two, who eloped when Wilde was only 18 years old and lived together in an Italian castle, have been spotted lunching together throughout the summer.
While Wilde, 27, hasn't said anything publicly about reconciling, she recently told Marie Claire there's no animosity. "We're friends," she said. "His family is my family."
Since the split, Wilde been hanging out with some of Hollywood's most eligible bachelors, including In Time costar Justin Timberlake, Bradley Cooper and Jake Gyllenhaal.
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