The Smashing Pumpkins frontman composed the theme song for Simpson's upcoming reality show

By Suzanne Zuckerman
February 21, 2010 01:00 PM

When Jessica Simpson released photos of her laughter-filled recording sessions with Smashing Pumpkins frontman Billy Corgan last month, buzz that the two are dating reached its highest volume yet.

At the time, a source told PEOPLE, “He got her number and starting calling her. He thought she was cute … adorable … and she got a little crush.”

Now Corgan himself has clarified the nature of their relationship – sort of. “[Simpson] asked me to help her out on the theme song for her new TV show,” he told the Chicago Tribune of the alterna-pop tune he composed for VH1 s The Price of Beauty, premiering Mar. 15.

As for the romance rumors, Corgan, 42, said, “The stuff that I ve seen doesn t have any bearing to the reality that I m in. It s like being in a cartoon. It has nothing to do with what s really going on or how I feel.”

And despite the fact that Simpson s current Allure cover story could be interpreted as evidence of her growing feelings for Corgan – “I definitely will marry an artistic man,” says Simpson, 29. “I don t have a physical type. I have an emotional type. When you have yourself together, I don t care what you look like at all” – a source close to Simpson tells PEOPLE the pair are “good friends.”

Reporting by K.C. BAKER
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