Justin Bieber And Hailey Baldwin Fighting Over Kourtney Kardashian? Singer Given An Ultimatum?

Justin Bieber and Hailey Baldwin allegedly fought over Kourtney Kardashian. An insider revealed to Us Weekly how the pop star's best friend turned rumored girlfriend gave him an ultimatum amid rumors linking him to the "Keeping Up with the Kardashians" star.

The "What Do You Mean" singer has long been questioned for his closeness to the 19-year-old daughter of Hollywood star Stephen Baldwin. However, fans got surprised after the 21-year-old hitmaker got linked to Kourtney Kardashian, who is 15 years older than him.

Because of reports linking the sexy mother-of-three to Justin Bieber, Hailey Baldwin allegedly told the "What Do You Mean" singer to finally make their relationship official.

"She demanded he stop stringing her along," an insider revealed. "She said he would lose her if he didn't man up and show he was serious about her."

"Justin has never had a woman act like that before. He couldn't say no. So he's been seeing her again and is with her all the time," the insider explained.

The two have somewhat announced that they are officially a couple after the singer himself uploaded Instagram photos of them kissing and being sweet to each other during New Year.

The revelation came after he was interviewed by the same magazine last October about how he wants to remain single after his highly publicized relationship with singer-actress Selena Gomez.

"I'm not really ready to date right now," Justin said. "I'm just trying to just focus on my music."

Beliebers speculated about how his relationships with Hailey and Kourtney must have helped him move on from his wild partying and run-ins with the law.

However, Mirror UK reported that the Grammy-nominated artist himself explained his sudden change.

In a radio interview for "The Bert Show," the singer said it was faith that made him want to clean up his life.

"I am not going to go into detail of what I was doing and where I was at, but I was pretty lost and woke up one day and felt like God was telling me something," Justin Bieber said, before news about him and Hailey Baldwin got out. "I'm not super religious or anything but I just heard a voice and was like, 'You know what? I'm going to change my life around. I'm going to switch up some things and put some stuff together.'"