Harry Styles is falling extremely hard for his new girlfriend, Olivia Wilde.

According to OK! magazine, they have been spending a lot of time together - too much time that it's making the "Watermelon Sugar" hitmaker become obsessed with her.

In fact, the 27-year-old is "so besotted" with the actress-turned-director that he started to brush off friends so that he can spend most of his time with Wilde.

Styles and Wilde first met on the set of their movie "Don't Worry Darling," and just before the movie wrapped filming, they got together. This is also following Wilde's split from ex-fiancé Jason Sudeikis.

According to a source, their romance started "fairly cool," but now things have changed between them.

"It's gotten to the point where he follows Olivia everywhere he can and barely has any interest in seeing anyone else."

Now, friends are worried for the "Sign of the Times" crooner, who was recently photographed on a luxurious yacht packing on the PDA with the "In Time" actress in an Italian getaway because he may be in for a very rude awakening.

The source explained, "Harry assumed he'd be calling the shots, especially since it was Olivia who was doing the chasing at first."

The source further described the British toy boy as someone who "turned into Wilde's little puppy dog."

They also said that it might only be a matter of time before the "Booksmart" director, who shares two kids with Sudeikis Otis, 7, and Daisy, 4, grows bored with her younger beau.

And when that happens, the source alleges that Wilde is going to break Styles' heart.

In fact, Harry Styles should reportedly prepare for the heartbreak.

 

READ ALSO: DaBaby NOT Sorry? Rapper Releases Offensive Music Video After Unleashing A Vile Tirade On Gay People

In April, another insider revealed to OK! magazine that their lust phase is about to end, and they're starting to realize that they have little to no things in common - and it has something to do with their age gap.

Wilde is 37 years old, while Styles is 27.

The New York native raised eyebrows back in April after looking downcast while walking the streets of London alone, while the "Golden" singer was busy working on a movie opposite Emma Corrin.

But beyond that, the couple is allegedly trying to do things separately while hoping to spend time with each other.

Harry Styles is working on a new movie while Olivia Wilde uses her time to spend more time with her kids.

READ MORE: Shakira Could Face Jail Time If Found Guilty For THIS Crime -- What Did She NOT Do?