Pete Wentz is at risk for runny mascara after spending a night at the movies whining about Joe Simpson’s perceived preference for Jessica Simpson’s new boyfriend, Tony Romo.

Pete and wifey Ashlee Simpson went to see Alvin & The Chipmunks at The Grove Theater in Los Angeles on January 6th, where the couple was overheard bickering about the Pete/Tony/Joe triangle.

“Your dad doesn’t like me, but he loves Tony,” Pete wailed to Ash. “You know it.”

Pete could be on to something. Joe is rumored to be nudging Ashlee to boot the Fall Out Boy in hopes of landing her a reality dating show-ala The Bachelorette.

A family friend tell In Touch Weekly that it’s not that Joe dislikes Pete “but he really loves Tony, and that’s where the tension is.”

Pete once said: “I do well with the grandparents, that’s my demographic. Not so much the mom and dads.”