The song "Love on the Brain (Don Diablo Remix)" by Rihanna explores the complex and intense emotions of a tumultuous love affair. The lyrics depict a situation where the protagonist experiences both physical and emotional pain from their partner, but cannot resist their pull.

The repetition of "No matter what" suggests that the protagonist is willing to endure any harm inflicted by their lover because of the intense pleasure they derive from the relationship. The line "It beats me black and blue but it fucks me so good" conveys a physical and sexual intensity that overwhelms the protagonist, blurring the lines between pleasure and pain.

The chorus, "Must be love on the brain, that's got me feeling this way," implies that the protagonist is aware of the irrationality of their emotions, acknowledging that their love is clouding their judgment. Despite recognizing the toxicity of the relationship, they cannot break free. The repetition of "be lo-lo-lo" in the second verse further emphasizes the addictive nature of this love, as if it has become an obsession.

The pre-drop section, with the repeated phrase "must be love," implies that the protagonist is desperately trying to convince themselves that their feelings are justified and that their actions are purely driven by love. However, the chopped vocals in the drop section create a fragmented and distorted sound, perhaps symbolizing the fractured nature of the relationship and the confusion the protagonist feels.

Overall, "Love on the Brain" captures the deeply complex and conflicting emotions experienced in a toxic and addictive love affair. It portrays the struggle of being unable to break free from a destructive relationship, even though the pain inflicted is clear.