"Rocky spoils her with love and affection and has swept Rihanna off her feet." According to the friend, the duo have been spending every minute together since the rapper, 32, moved into the 33-year-old Fenty Beauty founder's Beverly Hills mansion.
"All the downtime they got last year really allowed them to connect on a deep level," dishes the pal, who says Rihanna is "unbothered" by Rocky's rep as a ladies' man.
"As far as Rihanna's concerned, he's her guy," the friend adds. "They've already started daydreaming about their perfect wedding. It's clear to everyone that Rihanna and Rocky want to spend the rest of their lives together!"
The musicians have been close for years, and Rocky even opened for Rihanna on her 2013 tour.
As OK! previously reported, the "Praise the Lord'' rapper spoke candidly about how he felt about being romantically involved with his longtime friend. "So much better when you got the one. She amounts to probably, like, a million of the other ones," Rocky gushed.
On the subject of having a family, the rapper said that he'd welcome it. "If that's in my destiny, absolutely, I think I'd be an incredible, remarkably, overall amazing dad," he said, adding that he would have a very "fly child."
This is not the first time that Rocky or Rihanna have talked about the possibility of having kids together. An insider previously told OK! that the two have been toying with the idea of expanding their family.
"For all his swagger, Rocky knows he'll find it pretty impossible to do better than Rihanna, so he's down with this baby plan and ready to roll with it," the insider dished.