From the moment Justin Baldoni announced in 2019 that he was adapting the best-selling book It Ends With Us into a film, there was a widespread frenzy.

There are few books in recent years that have become as big a cultural phenomenon as Colleen Hoover’s novel – it has sold 20m copies and became an internet sensation on TikTok with more than one billion tags on the app.

When Blake Lively, who rose to fame in the 2000s playing Serena van der Woodsen in Gossip Girl, was cast as the main character, fans became even more excited, describing her as the perfect choice to play Lily Bloom, a young woman who grew up witnessing domestic abuse and winds up in the same position years later.

Lily, a florist in Boston, navigates a complicated love triangle between her charming but abusive boyfriend Ryle Kincaid – played by Jane the Virgin’s Justin Baldoni – and her compassionate first love, Atlas Corrigan (Brandon Sklenar).

Released at the beginning of August, the film became a box office success bringing in more than $350m (£280m) globally.

But despite its financial success, everything wasn’t running so smoothly behind the scenes. Rumours of a feud between Baldoni and Lively began swirling before the film was even released.

Last week, Lively filed a legal complaint against her co-star, accusing him of sexual harassment and starting a smear campaign against her, something Baldoni strongly denies. Here is the story so far: