'Roar' beauty Katy Perry has opened up about the dark days that followed her split from husband Russell Brand and explained that the situation was so intense that she didn't know how to cope with it.

Speaking to America's Marie Claire magazine, the superstar admitted that she coped with what was going on at the time by drinking and eating junk food:

"There were two weeks of my life after I found out the truth of my marriage where I was like, 'OK. All right. I can't feel this. This is too intense right now.' I was, like, just eating Flamin' Hot Cheetos and drinking, and that's it."

She then added that the relationship with her on-off boyfriend John Mayer is much better now that they took some time apart:

"I took a break from my boyfriend, not one that I wanted. It was like a splash of cold water to search inward on what was going on with me. That is what led me to this new awakening, this realizing, if I don't do some self-love, I'm not going to be able to keep the love that I want. I still needed to deal with all of my ex-husband stuff. I hadn't. It's almost like if I kept talking about it, it would seem like I actually cared about it. I don’t."

"He's (Mayer) just a fantastic partner. I've been a fan of his for such a long time. He's got a brilliant, brilliant mind. It's a rad, mature relationship."