Tongues are wagging about Pete Wentz. Why? Because it looks like the newly wed has started wandering away from the little family nest he has created in the past year with 24 year old Ashlee Simpson and their new baby boy Mowgli!

While on a jolly in Las Vegas, Pete was spotted with a huge smile on his face, getting on down, and a bit more, with Playboy model Holly Madison and several mates at the Palms Casino where he enjoyed all that was on offer to him by the scantily dressed dancers.

A party goer kindly reported for Ashlee, and the world to know, ‘Pete Wentz was in great spirits. He was dancing and singing along to his band’s own songs, while grinding up against the dancers. At one point he was even dancing on a pool table with the girls.’

Looks like this ‘happy ever after’ could end up with the same unhappy ending as most Hollywood marriages if Wentz, 29, doesn’t get his philandering under control tout de suite!