Niall Horan and Ariana Grande are purportedly spending a lot of time together lately, allegedly working on their "budding friendship," according to Daily Mail.

Niall Horan has reportedly split up with Sydney student Melissa Whitelaw while Ariana Grande is purportedly mending her broken heart after breakup with Big Sean. Daily Mail says Ariana was reportedly spotted leaving Niall's Hertfordshire mansion in the early hours of Wednesday morning, while the One Direction member was reportedly photographed visiting the "Problem" singer's London hotel on Wednesday evening.

Hollywood Life says that in between the Niall Horan and Ariana Grande's visits to each other's places, the two reportedly went shopping together at Harrods although they arrived and left separately. The two reportedly seem to can't get enough of each other and just had to meet again a few hours after parting.

Despite rumors and fans' assumptions that the two are together, Ariana's camp reportedly set the record straight and clarified that the two are just friends. "Ariana is friends with Niall. He had a big party that she was leaving," Ariana's rep reportedly told Hollywood Life after the singer was seen leaving the One Direction member's house in the wee hours of the morning.

Mirror notes that Niall Horan and Ariana Grande also reportedly made an appearance at London club Cirque Le Soir after the "Break Free" singer performed at O2 Arena on Monday night. The 21-year-old singer's first UK concert which is part of her "The Honeymoon" world tour was reportedly attended by 20,000 fans. After performing for a big crowd, Ariana purportedly chose to unwind with the One Direction member at the burlesque club.

Niall reportedly raved about Ariana's performance on Instagram, sparking rumors that he's pursuing the singer. "This girl blew me away! She has the most incredible voice I've ever heard! Superstar," Niall reportedly captioned his Instagram post.