He recently described her as 'the loveliest person on the planet' and 'one of [his] best friends' in an Instagram post, but it looks like Niall Horan and Hailee Steinfeld may be more than just pals, if rumours are to be believed.

The One Direction man and the actress were spotted hanging out at a Backstreet Boys concert on Saturday night, where they were seen singing and dancing along to the boyband.

At one point, Twitter user ninergrl6 even caught Horan on camera as he was cajoled into singing a few lines of 'I Want It That Way', followed by Steinfeld tenderly touching his face.


A source told E! News that they then went on to a club with friends, where Diplo was playing a DJ set.

Can we expect to see Ms. Steinfeld 'round Mullingar way at some point in the near future, Nialler? There's even a catchy 'celeb couple' name ready and waiting to be used: howiya, Nailee...