The "Teenage Dream" singer is out and about with the close launching of her third album "Prism". Perry is featured in the September issue of ELLE UK and has spilled the beans on rumored boyfriend Robert Pattinson and on her former husband, English actor and Comedian, Russell Brand.

In the September Issue of ELLE the star had also talked about her relationship with John Mayer.

Katy Perry had talked to Kristin Stewart, the ex-girlfriend of Robert Pattinson, sending her a message saying "'I know you've seen all this stuff but you know I would never disrespect you. I'm not that person,'" Perry had told a reporter for MTV UK during an interview.

She told the reporters that she and Rob were good friends. He was there when she received the text message from Brand saying he wanted a divorce, and Perry was there for Pattinson when KStew allegedly cheated on him with her director from "Snow White and the Huntsman, Rupert Sanders.

Perry made it clear that she and the twilight star were just very good friends.

Well that closes that rumor, but what about John Mayer?

In upcoming issue of ELLE UK, perry admitted to wanting to date "Challenging guys" and we quote "The men I have gone for are challenging, yes, but they're also wildly intelligent and poetic,"

She had called Mayer a broken bird but had fallen for him anyway. Katy talks about her relationship with John Mayer, saying

""He pulled away, that was a big hello for me. I realized I could lose the person I loved and I had to deal with some things, issues I think a lot of women have. You can be strong in one aspect of your life but submissive in another. In relationships, it was hard for me to speak up and set boundaries. I think that a lot of that has to do with the fear of loss."

Katy Perry's album will hit the stores in this October 22nd and the movie Smurfs 2 is to launched tomorrow.