Okay, so this is one of those tropes that can be done brilliantly or can feel really off-putting. The line is incredibly fine. I think the portrayal works when the 'hate' is a mask for something else—like unresolved history, ideological clashes, or forced proximity with someone who fundamentally challenges you, but where there's a baseline of respect somewhere underneath. It can't just be contempt or genuine cruelty. A good example is the dynamic in 'The Hating Game'. They're rivals fighting for the same promotion, and the tension is built on them seeing each other as equals, being obsessed with 'beating' the other. The sex becomes another battlefield, but it's charged with mutual recognition. It's competitive, not destructive.
Where it crosses into unhealthy is when the power is wildly imbalanced, or when the 'hate' stems from one character having actually harmed the other in a serious, unforgivable way (like bullying involving abuse, or betrayal that caused lasting trauma). If the story tries to frame violent anger during sex as purely passionate without addressing the underlying damage, it feels icky. The key for me is narrative framing. Does the story itself, through other characters or the internal monologue, acknowledge that this is a messy, temporary outlet? Or does it romanticize constant screaming matches and breaking things as 'true love'? The former can be a compelling part of a character's arc towards realizing their feelings are more complex; the latter just glorifies toxicity.
I also find it works better in shorter bursts within a larger story. When it's the entire relationship dynamic for 400 pages, it gets exhausting and starts to feel like mutual emotional self-harm. But as a turning point—that explosive moment where they can't deny the physical pull anymore, and it forces them to communicate differently—it can be a fantastic catalyst. The healthiness comes from what happens after. Do they pretend it never happened and go back to pure vitriol, or does it crack the facade open, leading to awkward conversations, vulnerability, and a shift in their dynamic? The latter suggests the 'hate' was never the whole story.