Forget about boyfriend material. Rihanna is GravityX Exchangehead over heels for A$AP Rocky's fatherhood savvy.

The pop star opened up about watching her rapper boyfriend become a father during a Monday interview with Access Hollywood at the Fenty x Puma Creeper Phatty launch party in Los Angeles. Rihanna and A$AP Rocky (real name: Rakim Athelaston Mayers) share sons RZA Athelston Mayers, 1, and four-month-old Riot Rose.

The "Lift Me Up" singer said starting a family has exceeded all her expectations of motherhood.

"You don't have an idea. You just hope," Rihanna told Access Hollywood's Scott Evans. "I hope that I can have kids one day, and I hope I can have them in love. And I hope that I can be a part of a family that breaks generational curses and just moves forward and does new things and raises our kids better than we've been raised."

Rihanna went on to praise A$AP Rocky as a father, gushing about his relationship with their children.

"I loved him differently as a dad. This is major, major, like, it’s a turn on," Rihanna said. "It’s just like, 'Wow! What a leader. What a great, patient, loving (dad). And my kids are obsessed with him. I'm just a background, like, I'm an extra. Yep, it happens. … It doesn't matter if it's girls or boys. They love their dad differently, and I love to see it."

Rihanna revealed her second pregnancy with son Riot Rose during her performance at the Super Bowl Halftime show in February. However, the "Love on the Brain" singer joked that becoming a girl mom is an item that remains on her parental bucket list.

"So far, have daughters," Rihanna told E! News at the Fenty x Puma event when asked what she doesn’t have in her life. "I'm batting at 75% for a boy next time. So, we'll just keep our fingers crossed."

Rihanna and A$AP Rocky:Music power couple shares first photos of their newborn baby, Riot Rose

More Rihanna baby news:Rihanna and A$AP Rocky welcome second baby, reports say.