"I definitely have been dating mostly women recently ... I'm not one or the other," the "Bad News Bears" star told the magazine.
She added that she thinks women "are the most amazing creatures on earth."
"They're gentle, and also more intelligent than the men that I've met recently. I don't have a steady right now, but I look forward to it," the 51-year-old actress added.
Along with McEnroe, O'Neal also dated Michael Jackson in the 1970's. She has three children with McEnroe -- Kevin, 29, Sean, 28 and Emily, 24.
In her 2011 memoir "Found," she detailed her drug use as a teen and how she got to be a happy, content mother of three. She also opened up about life with her father, fellow actor Ryan O'Neal, who she was estranged with for many years.
"It's talking about now and how I live through what I went through as a child," she told "Good Morning America" in 2011. "I don't think about it too much anymore. Like what I had and what I wish I had. I think about what I did have."