Selena Gomez is reportedly anxious that Justin Bieber might confuse her again now that she is allegedly dating Niall Horan. Meanwhile, the "Love Yourself" hit maker chose to party hard following claims that his ex-girlfriend has found a new beau.

The 23-year-old "Come & Get It" singer is rumored to be dating Niall Horan but reports revealed the former Disney star is afraid that Justin Bieber might hold her back again.

In a report by The Hollywood Life, it was claimed that Selena Gomez is now dating One Direction's Niall Horan but she is having a hard time letting go of her past romance with Justin Bieber.

"Selena's anxious about seeing Justin again," an insider dished out. "She's in such a good place right now, happier than she's been in ages, but when it comes to Justin they're always a lot of intense emotions. Texting and talking on the phone is one thing, but seeing him face to face always does a number on her."

Selena Gomez also reportedly wanted to give the 21-year-old One Direction member a chance.

"In the past Justin has always had such a hold on [Selena]," the insider added. "She's telling herself she's strong, but it's hard not to worry it could happen again. Right now she wants to give things with Niall a chance and she doesn't want Justin to confuse her."

Meanwhile, amidst the news that Selena Gomez and Niall Horan are dating, "What do you Mean" hit maker Justin Bieber is shrugging it off by partying.

In a report by Yahoo Celebrity UK, the 21-year-old Canadian singer was spotted in Miami, Florida where he reserved nine rooms in Villa Casa Casuarina.

An insider said that Justin Bieber was "in an extremely good mood" as he partied all night till the wee hours with his close friends and security.

He was also spotted celebrating at Wall Lounge inside the W South Beach Hotel where he had more than 15 girls in his table.