'Teen Mom' Fakery! Find Out What Kailyn Lowry & Ex Jo Rivera Could Have Been Hiding At The MTV Movie Awards 2016

Kailyn Lowry and ex Jo Rivera were all about keeping up appearances during the 2016 MTV Awards on April 10.  

The estranged exes were all smiles as they walked the red carpet despite their recent bad blood.  

As Star readers know, Kailyn was less than thrilled when hubby Javi Marroquin told her Jo sent their son Isaac to school in his pajamas, plus without a bath.  

An explosive rant sparked between the exes, which got Javi involved, too. “Worry about your own f**king kid,” Jo fired back after Javi's criticism of his poor parenting skills. But Javi wasn't about to back down from the fight. “Obviously I’m worrying about your [child] cause you don’t do nothing!" he slammed back.  

And despite their red carpet smiles, the exes are still battling out their differences. During the Teen Mom episode that aired April 10, things turned nasty when Jo dropped off their son without as much as a friendly "hello" to his baby mama. "So, that was awkward when he dropped him off," Kailyn complained to her friends. "So weird, he didn't say anything to me."