Justin Bieber ‘Couldn’t Care Less’ If Kourtney Kardashian Is Using Him to Get Revenge on Scott Disick

Justin Bieber isn’t sorry about his fling with Kourtney Kardashian.

Though Scott Disick is said to be disapproving of the two hooking up, Bieber is allegedly a-okay with being caught in the former couple’s drama. Word has it that the 21-year-old singer is thrilled that Kardashian, 36, is into him — even if there’s nothing serious going on between the two.

“He has had a huge ego boost from hooking up with Kourt. It’s been going on for a few months,” a source tells People. “He is used to being swooned by young girls that have nothing else going on. Kourt is a hot mom with a career.”

“He more thought, ‘Wow,’ and couldn’t believe that she would go for him,'” the insider continues. “He brags about how hot she is. He is happy while it lasts. Even if she is using him to get back at Scott, he couldn’t care less.”

As for how Kardashian feels about casually seeing someone 17 years her junior? Someone close to the situation claims the mom-of-three is just focused on having a good time.

“It’s just one of those things where it makes Kourtney feel good about herself. It’s not serious at all,” a source tells the publication. This young guy is into her, he thinks she’s hot and she’s older. She just wants to have fun.”

According to Us Weekly, Kardashian and Bieber have been “hooking up since late August, early September” but have just started to spend more alone time together.

Kardashian was recently spotted partying with Bieber at Los Angeles’ The Nice Guy before she was seen leaving Bieber’s hotel after 4 a.m. The pair previously spent time together at Universal Studios’ Halloween Horror Night before Kardashian attended Bieber’s American Music Awards after-party last month.