Rumors of Niall Horan and Barbara Palvin getting back together have been circulating.

The former couple has been seen together at the 5 Seconds of Summer's concert at London's Shepherds Bush Empire last week.

According to the Daily Mail, the two 20-year-olds split due to the pressure of a long-distance relationship.

A source had told The Sun, "Being either a working model or performer is incredibly difficult on a relationship. Add to the fact that Barbara lives in America and Niall's base is in London, and you've got a logistical nightmare."

Since then, Barbara posted a picture of herself with a mystery man on Instagram while Niall Horan reportedly went on a romantic date with Selena Gomez, thanks to the efforts of Taylor Swift.

Barbara Palvin responded to the rumors of the two young stars getting back together saying, "He's my friend. I've always been a girl who hangs out with boys, and I'm not going to change that, even though people write stuff about me."

She concluded that she likes all the One Direction band mates stating, "I like them too, they're all very nice people. They're all so hot."

We're hoping Barbara will make an appearance during One Direction's Where We Are tour.

While speculations of Niall Horan and Barbara Palvin getting back together excite (or sadden) fans, One Direction member Harry Styles seems to be fizzling out from the boy band that made him so famous.

Xpose Entertainent has reported that been "neglecting" his One Direction team while spending time in the states.

An insider reportedly claimed that Harry has become a "virtual stranger" and "it's as if Harry isn't part of the group."

This may make things difficult when they're spending every day together for their Where We Are tour in the summer.

The One Direction crew, Zayn Malik, Niall Horan, Louis Tomlinson and Liam Payne, are reportedly worried that Harry Styles may be ready to move on and pursue his own career once the Where We Are tour comes to an end.

The Daily Star newspaper reported that the fellow "Midnight Memories" singers want to know that Harry Styles will be "in the group for the long haul" and that they're not just being "used" for his own career ambitions.