Showbiz
Rex Features
The Fall Out Boy rocker described the media interest in the couple as "a witch hunt" and dismissed the reports as "crazy".
He told MTV: "There is a witch hunt for people to be pregnant whenever they get engaged in Hollywood.
"This is all news to me. I can't wait for the story about how I'm really in a gay relationship and this is all just a cover...I mean really, this is crazy...I mean we're engaged, that's true, and happy about it."
When asked to clarify that he was denying the pregnancy speculation, Wentz said: "Yeah."
Simpson confirmed that she was engaged to the musician last week, telling fans that she was "thrilled".
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