She recently tried to deny the romance rumours, but Selena is doing little to really stop them. 

Fresh from his performance on the X Factor last night, Niall attended the X Factor final after-party, and he had one very special lady in tow. 

Niall's rumoured lover, Selena Gomez joined him at the party and they did little to hide that they left together. 

Selena looked ah-mazing wearing a satin green dress and Niall looked as dapper as ever in a square-print suit and burgundy tie. 

Niall had appeared on-stage during the final, which saw Louisa Johnson crowned winner of X Factor 2015, where One Direction performed for the last time before their hiatus.

The sighting of the pair come after a few weeks of rumours. While Selena said they are just "good friends", E! News reports that the duo have been locking lips all weekend.