The most low-key member of hit UK boy band One Direction is the last of the boys to break the hearts of tween fans all over the world. Niall Horan is reportedly secretly dating Irish stunner Zoe Whelan.

Sources say the 19-year-old singer has been going out with Whelan for a month, but has kept it under wraps to protect the girl's privacy.

But it seems the One Direction member is done with the secrecy, as he has introduced the model to his entire family during his brother's wedding. This marks the first time Horan has brought home a girl since rocketing to stardom.

"Niall has been secretly seeing Zoe after he met her backstage," an insider reveals to The Sun. "Zoe's travelled all over the UK to meet up with Niall on the band's tour."

"But the biggest sign he's really serious about her is that he introduced her to his whole family at his brother's wedding," the source continues, saying that the young star is fiercely protective of his new lady love and the Horans "all really took a shine to Zoe."

Horan certainly has good reason to be secretive of his new girlfriend, as many One Direction girl pals have come under fans' fire for being too close to their idols. Ladies hoping to get close to any of the boys should be prepared to deal with fanatics, not to mention harsh messages on social networking sites.

However, when asked if any of them would consider dating a fan, the world would be happy to know that all of them find nothing wrong with it.

"We always get asked if we would ever date a fan," Zayn Malik says in an interview with Pop Sugar. "I think we probably would."

Harry Styles agrees adding, "Yeah. You like someone when you like someone."

Despite the difficulty of maintaining relationships with media attention and touring internationally, all of the band members, save for Harry Styles, are in stable relationships.