Rihanna is an independent woman who is old enough to decipher her choices. If she decides to go back with Chris, then that is ultimately her decision and her decision only.
I'd be sad for her, honestly. I'm already sad for her actually, because she seems so lonely, so much so that she seems to be missing what they had. Forgetting/ ignoring all the bad moments in their relationship.
But even still, I think I would still support her career. She's only young and she will eventually learn for herself. I just hope the same thing doesn't happen and, even worse, she keeps it quiet this time around to protect him. She's really such a great person, she deserves so much more and it would break my heart tbh.