It seems like Harry Styles has become infatuated with rumored new girlfriend Nadine Leopold -- to the point that he is apparently ditching his friends for her.

According to HollywoodLife.com, the One Direction heartthrob is pissing off his pals with his new behavior, nonstop talking about the Victoria's Secret model and dedicating all of his time with her.

"Harry goes on and on about how funny Nadine is, how smart she is, how cool she is -- he's got her way up on a pedestal. He's nonstop to the point that it's annoying to a lot of his friends," a source revealed. "And he blows off plans with his friends for her, which he's never done before. People have been making fun of him over it, calling him whipped. Harry doesn't care -- he's never been bothered by what other people think. He does what he wants and right now, Nadine seems to be all he wants."

Styles even added the initials of Leopold to his extensive body art collection for 21st birthday, according to The Daily Star. The "Steal My Girl" singer reportedly secretly got a brand new ink inspired by the blonde beauty over the weekend, done by his go-to tattooist in Los Angeles.

"Harry made everyone sign confidentiality agreements so the girl's letters are a secret at the moment," a source close to Shamrock Tattoo Company revealed. "But he had two sets of initials together -- 'HS' is one of them of course, but everyone's saying that the other initials are 'NL' -- for Nadine Leopold."

Also, Harry Styles allegedly requested the tattooist come to his house in order to keep the inking process private.

"Harry used to go to tattoo parlors when he came to LA," the source said. "But he gets mobbed so much that he has an artist go to his house instead."

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