The actor and musician, who is the son of legendary songstress Diana Ross, said he’ll be cheering on the Fall Out Boy bassist at the 2019 Grammy Awards on Sunday, where he’s nominated in the best rock album category this year for the band’s album, Mania.
“Pete Wentz — he’s nominated so that’s exciting,” Ross, 30, told PEOPLE at the Warner Music Pre-Grammys Celebration on Thursday night, and added that he’s also rooting for his good friend Bebe Rexha. “I’m so excited that she’s nominated, that’ll be amazing.”
The duo are part of a blended family that consists of Simpson Ross, 34, and Wentz’s son Bronx Mowgli, 10, Ross and Simpson Ross’ 3-year-old daughter Jagger Snow and Wentz’s two children with longtime girlfriend Meagan Camper: daughter Marvel Jane, 8 months, and son Saint Laszlo, 4.
During an appearance on Watch What Happens Live with Andy Cohen in September, Ross opened up about the relationship between himself and Wentz, 39, when it comes to co-parenting Bronx, whom Wentz and Simpson Ross share custody of.
“I grew up with a big family,” Ross said. “I think it’s a beautiful thing. … My relationship with Pete has been amazing. He’s an amazing father. He knows I love his son very much, but it’s his son.”
“I’m like, ‘Thank you, God,’ ” Simpson Ross chimed in about the twosome’s amicable dynamic, joking, “God looked at me one day and shined.”
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Ross’ comments were not surprising, considering the Fall Out Boy bassist’s own commentary in the past on the co-parenting relationship between himself and Simpson Ross, whom he split from in 2011 after nearly three years of marriage.
“I have to say, I have really good co-parents to deal with. [Ashlee and Evan] are both communicative and easygoing,” Wentz told PEOPLE in January 2018.
“For Bronx, it’s basically the only life he’s really known,” he added. “So it’s normal to him, and he’s really good at it. Our schedules can be crazy, so we’ve been good about making sure Bronx has balance.”
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Ross and Simpson Ross, who star on the E! series Ashlee + Evan, just finished up their North American tour at the end of January in support of their eponymously titled debut EP. While out on the road, Ross said that their kids got to join in on the fun.
“We have the best time!” Ross told PEOPLE of being out on tour. “It’s going to be hard to do it separately if we start working on our own stuff. It’s so nice to have your partner with you in that process and our daughter was sleeping on the tour bus with us, and Bronx was out there with us.”
He added of Jagger: “She wants to be on stage the entire time.”
The 61st Annual Grammy Awards are broadcasting live from Staples Center in Los Angeles on Sunday, Feb. 10 at 8:00 p.m. ET/5:00 p.m. PT on CBS.