After her split from Big Sean last April, singer/ actress Ariana Grande is said to be dating One Direction band member Niall Horan. The two sparked dating rumors after they were photographed spending time together on more than one occasion this week. 

On Wednesday evening, June 3, Horan was pictured paying a visit to Grande's London hotel. According to the Daily Mail, the two went on a shopping trip to luxury department store Harrods. The "Problem" singer and the boy band member reportedly arrived and left separately, and Horan was joined in his 4 x 4 vehicle by director and photographer Alfredo Flores and other friends.

After shopping, the two went their separate ways as Horan headed to dinner at Nobu with his friends before reuniting with Grande at the Langham Hotel. 

Earlier in the day, the pop star was seen leaving Horan's home at 3 a.m. after reportedly spending five hours inside the mansion. According to Daily Mail's sources, Grande arrived at the 21-year old's home at 10 p.m. Tuesday night.

But despite the rumors, Grande's rep told the website that the singer is friends with the One Direction member and that "he had a big party that she attended." E! Online reports that the party was for celebrity beauty expert Chantel Gonsalves and that after the bash, the group continued to have fun at London's Crique Le Soir nightclub. Grande posted a video on Instagram of her and Horan along with their friends singing after inhaling helium out of balloons. 

Grande and Horan also partied together on June 1 after her concert at London's O2 Arena. Horan gushed about the singer's "incredible voice" on Instagram, wherein he captioned a short video of Grande singing, "This girl blew me away! She has the most incredible voice I heard! Superstar!" 

Horan recently split up with his Australian girlfriend Melissa Whitelaw after three months of dating, while Grande has broken up with rapper Big Sean after eight months of dating.