Harry Styles to celebrate 21st b'day with Nadine Leopold

Singer Harry Styles is reportedly "in love" with model Nadine Leopold and will celebrate his 21st birthday with her over the weekend.

Styles turns a year older Sunday.

According to a source, the 20-year-old, who has previously dated TV presenter Caroline Flack and singer Taylor Swift, is besotted with Leopold and the couple is spending most of the time together in Los Angeles, reports femalefirst.co.uk.

"Everyone's teasing him, saying he's in love, and he's not denying it. It's the real deal. He's never felt this way about anyone before," The Sun newspaper quoted the source as saying.

"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," the source added.

Earlier it was reported that Styles, who was first romantically linked with Leopold, 21, in November last year - "can't wait" for his birthday to come round because he is the only member of the boy band One Direction who as yet can't legally drink in the US.

A source said: "Harry can't wait to be able to legally drink in the US. He's in arguably the most famous pop band in the world but still can't get a drink in certain places.