Heartthrob Harry is snapped up by Irish photographer

The curly-haired singer, who appeared alongside Modern Family actress Sofia Vergara last weekend on America's hit show Saturday Night Live, is rumoured to be secretly dating Sarah-Louise Colivet.

According to sources, the pair met at a concert in New York last month and Sarah-Louise (24) has been smitten with Harry (18) ever since.

Harry's love life has barely had a break from the headlines, thanks to the X Factor graduate's recent romance with 32-year-old presenter Caroline Flack.

Now, it seems he's continued his fascination with older women.

Lovely

Sarah-Louise's mum Jacinta has revealed that the duo got to know each other well while 1D were stateside.

"She has struck up a friendship with him. She rang and said he was lovely, great fun a really nice guy.

"She met him in New York -- she is a cool customer, though, so she wasn't going to tell her mum too much.

"I don't think she realised that girls go crazy for him until now. He has gone on to Australia now, but they will definitely stay in touch."

Insiders have said that Sarah-Louise, who lives in the Big Apple, hit it off with the chart-topper instantly but that she has been trying to keep things under wraps.

A source said that Harry explained to the brunette beauty that he must appear single, due to strict instructions from his bosses. However, Sarah-Louise has liked comments from people calling her the "luckiest girl ever" on her Facebook page.

A pal posted on her social networking site: "I heard about Harry Styles you absolute legend.'

Friends of Sarah-Louise also admitted that she can't wait to be reunited with the teen after last hooking up on March 28 when the quintet were promoting their debut album Up All Night stateside.

Meanwhile, the What Makes You Beautiful singers have gone down a storm in Australia.

They were spotted enjoying some well-deserved time off yesterday and took a boat out around Sydney harbour to take in the sights.

Waiting fans at the airport were left disappointed earlier this week, however, as 1D could not greet their supporters due to the massive crowds. Mullingar native Niall Horan (18) wrote on his Twitter: "Guys this is crazy here, thank you all so much! Please stay safe, we don't want anyone to get hurt."

labutler@herald.ie