"I have this weird thing that if I sleep with someone they're going to take my creativity from me . . . " she says, adding that while she's had sex, "I'm certainly not promiscuous."
Likewise, she admits to "occasional" cocaine use. "And when I say occasional, I mean maybe a couple of times a year," she says, adding she is "terrified of heroin."
She cautions: "I do not want my fans to ever emulate that or be that way. I don't want my fans to think they have to be that way to be great."
Drug use had, in fact, made her "completely mental" at one point, she says.
"All I will say is I hit rock bottom, and it was enough to send a person over the edge. My mother knew the truth about that day, and she screamed so loud on the other end of the phone, I'll never forget it. And she said, 'I'm coming to get you.' "
They went to her 82-year-old grandmother Ronnie Bissett's home in Glen Dale, W.Va. "I cried," Gaga says. "I told her I thought my life was over and I have no hope and I've worked so hard, and I knew I was good. What would I do now? And she said, 'I'm gonna let you cry for a few more hours. And then after those few hours are up, you're gonna stop crying, you're gonna pick yourself up, you're gonna go back to New York, and you're gonna kick some -- ' "
"Of course I got drunk at Yankee Stadium," she says, and laments, "I want to go to things like ballgames . . . "
That said, she notes "I'm not an idiot - I recognize that I'm a public figure and I'm going to be recognized if I'm wearing a bikini or a potato sack."