Blake Lively's alleged text messages to Justin Baldoni included a reference to Ryan Reynolds, Taylor Swift and 'Game of Thrones'

Justin Baldoni is taking legal action against his "It Ends With Us" co-star and her husband in a lawsuit he filed on Thursday.

Baldoni, in a lawsuit filed in New York federal court on Thursday, alleges extortion, defamation and claims related to breach of contract, among several others. He’s joined by his film studio, Wayfarer, and its chief executive Jamey Heath, and their public relations representatives, Melissa Nathan and Jennifer Abel. They seek at least $400 million.

Justin Baldoni sued Blake Lively and Ryan Reynolds on Thursday for extortion and defamation, as the 'It Ends With Us' battle goes on.

Justin Baldoni filed a $400 million lawsuit against his "It Ends With Us" costar Blake Lively, and Ryan Reynolds, claiming defamation and extortion.

Justin Baldoni has sued Blake Lively and her husband Ryan Reynolds, alleging that the Hollywood couple sought to “destroy” him and his career, after hijacking his film, “It Ends With Us.”

"It Ends with Us" director Justin Baldoni accused Blake Lively and Ryan Reynolds of defamation, while Lively's team says his attack is "desperate."

Justin Baldoni has sued his 'It Ends With Us' costar Blake Lively and her husband, Ryan Reynolds, alleging defamation, extortion, and breach of contract, among other accusations.

In this Deadline exclusive, it is clear the ever growing legal war between the It Ends With Us stars is getting more & more personal as more lawsuits

Justin Baldoni told TMZ he's 'grateful to be with the family' amid his lawsuit against his 'It Ends with Us' costar Blake Lively and husband Ryan Reynolds

From allegations of planting articles to concocting smear campaigns through text messages, Hollywood public relations has faced a messy few weeks.