Jean Baptiste Lacroix / WireImage.com 1 / 11
Jean Baptiste Lacroix / WireImage.com 1 / 11

Pete Wentz has nothing but love for his ex-wife Ashlee Simpson, with whom he shares custody of their 4-year-old son, Bronx. During an appearance on Bravo's "Watch What Happens Live" Monday, the Fall Out Boy bassist praised her mothering skills.

PHOTOS: Pete Wentz and Ashlee Simpson, the way they were

"I feel like we both realize that we're parents and we're in it for our kid. That's made it really easy," Wentz said of the musician, 28. "I feel like, as a mom, she's awesome. She's an awesome mom and we get along really well when it comes to our kid now."

PHOTOS: Ashlee Simpson's ever-changing hairstyles

Wentz, 33, also had some kind words for his former father-in-law, Joe Simpson. "I think he is a really great grandfather," the rocker said. "Really good guy." (Joe and Tina Simpson filed for divorce in the fall of 2012 after 30 years of marriage.)

PHOTOS: Ashlee and Jessica Simpson through the years

Since his split with Ashlee in 2011, Wentz has been dating model Meagan Camper. The former MTV reality star, meanwhile, dated Boardwalk Empire's Vincent Piazza for a year and a half; they split in November 2012.

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