Harry Styles reportedly asked rumored girlfriend Nadine Leopold to move into his home in Beverly Hills.

"Nadine couldn't have said yes fast enough," a source close to the couple revealed to Star Magazine. "She's based in New York for modeling, but she'll shuttle back and forth."

The source also claimed Styles thinks he has finally found the one: "The effect she has on him is really refreshing. The look on his face when he's with her says it all."

The latest rumors follow the One Direction member's star-studded 21st birthday bash, which the Australian beauty apparently made so special.

"Everyone's teasing him, saying he's in love, and he's not denying it. It's the real deal," an insider told The Sun via the Mirror. "He's never felt this way about anyone before. Harry has spent virtually all his free time in Los Angeles with Nadine. They're infatuated with each other and can't stand being apart. ... There's nobody else he'd rather be with on his birthday."

According to Heat magazine via Sugarscape, the pair even was spotted making out.

"Cara Delevingne, Kelly Osbourne, Kendall Jenner and Alexa Chung all arrived together, and Adele and James Corden also showed up," a source said. "Everyone from David Beckham to Cindy Crawford was there -- Chris Martin and Jennifer Lawrence were doing shots at the bar."

Styles and Leopold were seen "kissing and holding hands -- despite three of his exes also attending: Kimberly Stewart, Cara and Kendall."

Meanwhile, Leopold wants Taylor Swift to get over ex-boyfriend Harry Styles and just move on for good.

"For one thing, it's making his relationship with Nadine more difficult. They feel like wherever they go, they are hearing Taylor's songs on the radio," a source told HollywoodLife.com. "Nadine really wants Taylor to get over him. She wants Harry to herself and doesn't think it's right for Taylor to draw this out anymore. She wants Taylor to go away."

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