Let the battle over Bronx begin.
On Tuesday, Pete Wentz submitted legal papers in L.A. (obtained by TMZ) -- asking for joint primary and legal custody of Bronx, his son with estranged wife Ashlee Simpson.
PHOTOS: Ash and Pete, the way they were
That's not what Simpson, 26, asked for when she filed for divorce from Wentz, 31, last month: the singer-actress sought primary physical custody (and joint legal custody) of their little boy.
Another discrepancy: Wentz requests that each party pay their own legal fees; Ashlee had asked that the Fall Out Boy rocker pay for the both of them.
PHOTOS: 2010's biggest splits
The young couple wed in May 2008, when Simpson was already three months pregnant with little Bronx, born that fall.
Pals of the pair told Us Weekly that the twosome quickly became overwhelmed by parenthood.
"Ashlee loves Bronx but jumped into marriage and having a baby too quickly," one source told Us in 2009. "They feel they got trapped in a situation they were too young for."
PHOTOS: Hollywood's biggest family feuds
In a statement released after their divorce announcement, Simpson and Wentz said, "We remain friends and deeply committed and loving parents to our son Bronx, whose happiness and well-being remains our number one priority."
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
Get the scoop on Bradley Bayou's dress design that Oprah wore to the Emmy Awards.
Lea Michele, Megan Fox, and Kate Walsh all get an F on this week's Fashion Offenders.
Rihanna strips down to a bikini while vacationing near an active volcano off the coast of Italy on today's Celebs Gone Social.
Check out Khloe Kardashian, Kaley Cuoco and more stars who ride horses on today's Celebs Gone Social.
Jared Leto, Madonna and Jaime King all get an F on this week's Fashion Offenders hosted by Wonderwall's Jessica Wedemeyer.
Check out Kaley Cuoco's cutest canine-centric posts on social media on today's Celebs Gone Social.
© 2014 Microsoft