But Pete Wentz told MTV in an email he sent that there was a "witch hunt for people to be pregnant whenever they get engaged in Hollywood".
Pete Wentz and Ashlee Simpson, who is the sister of pop singer Jessica Simpson, have been going out together since autumn 2006.
One of the magazines even claimed that the baby was due in October, however, Pete Wentz said these reports were “crazy”.
A representative on behalf of Ashlee Simpson and Pete Wentz said that it was true the couple were engaged but would make no further comment.
