Niall, 19, and Brooke, 20, we pictured together last month after running into each other backstage before a One Direction concert in Brooke's home city of Manchester.
"Thanks @niallofficial," Tweeted Brooke to accompany a snap of the young stars. "Have a great show!!!"
Niall's friendship with Brooke comes two years after the Kiss You singer admitted being attracted to her in an interview One Direction gave before they became household names.
During an interview with Niall, Harry Styles, Zayn Malik, Liam Payne and Louis Tomlinson when they were still X Factor hopefuls, the Irish singer confessed he had a crush on Brooke, who plays Sophie Webster in the ITV soap.
"I like Brooke Vincent and Demi Levato," Niall even tweeted at the time.
"Niall has never made any secret of fancying Brooke," said a source to The Mirror. "So he's chuffed" they added in reference to the pair's growing friendship.
This is not the first time Niall has been linked to one of the small screen's hottest soap stars. In February he caused a story by tweeting about Hollyoaks actress Rachel Shenton as she appeared on ITV's This Morning.
"That girl on @itvthismorning is beautiful!" he wrote, which caused her to respond by holding up a sign saying "Hi Niall! xxxx" during the live show.