According to Rolling Stone, The Dream the whole “Birthday Cake” Remix was Rihanna’s decision. Im not surprised about The Dream’s answer because he has also been accused of  having some Ike Turner ways himself.

“It was Rih’s idea,… Not only do we work together, but [Rihanna] is a friend of mine. And it’s like, ‘You wanna do something? Then cool, let’s do it.’ I don’t know how she got the logistics and how it happened. Maybe she’ll talk about it one day. For me, it’s just music – two talented people doing a record together, doing two records together, and that’s what it was… I showed up at the studio, and it was like, ‘All right, cool, let’s finish this record,’ which we probably should have finished the first time we did it… 

It wasn’t about an incident that happened. The true thing really is to forgive, and you want to believe in people. I think [the topic] that should be more on the tongues is: how do we proclaim to be a nation of forgiving, and we go by all of these rules and everything, but we can’t actually do it?… It actually makes you look weaker than your adversary — if you don’t have the power to forgive, but you lie and say that you did… Because this is about her… If she can forgive, that’s where she is mentally. As a friend, it’s like, ‘Okay, cool. Let’s roll.” The Dream