Pete Wentz and Ashlee Simpson Having issues?

Ashlee Simpson and Pete Wentz share an oddly named baby, Bronx Mowgli, and seemingly one of the happier unions in the young celebrity universe.

But according to an item in Page Six, even these two have their battles.

Ashlee is reportedly irritated that she is left home watching the baby while Pete, the breakout star of the band Fall Out Boy, gets to go out and play.

“Ashlee and Pete are on the rocks. He is going out all the time and she’s stuck at home. It’s just not working,” a source says.

Seeing as Ashlee just scored a part on the Melrose Place remake, Pete might have to curtail his providing an insulting synonym for his critics and get on Bronx duty for awhile.

Their rep is denying that there is marital friction going on and says that the couple is currently in Australia reconnecting without their son.

It sounds like there could be a reason for that sudden vacation.