Has Kourtney Kardashian called it quits with Justin Bieber after his reunion with Hailey Baldwin?

Although Kardashian and Bieber have been romantically linked on and off for the last several months, they haven't been seen together in weeks and earlier this month, it was Baldwin who Bieber was caught leaving a nightclub with.

Meanwhile on Twitter, Kardashian has made a couple of nods to Beyonce's new album, which may have been a hint that she felt two-timed by her former flame.

Kardashian also recently shared a throwback photo of herself and her ex-boyfriend, Scott Disick.

Less than one month ago, a source claimed Kardashian and Bieber were going strong. 

“There’s definitely an age gap there, but they have a lot of chemistry,” a source told Star magazine, according to a Hollywood Life report. “[She] thinks Justin is the best lover ever. Being around Justin makes Kourtney feel young. It’s refreshing when she spends all day chasing after a bunch of rambunctious kids.”

Although Kardashian and Bieber were careful “not to flaunt their fling” in front of her children, Mason, 6, Penelope, 3, and Reign, Bieber had reportedly been to her home and spent time with her family.

“She’s joked that Justin is great with her kids, certainly more playful and fun with them than Scott ever was,” the source alleged.

Weeks later, however, things between Kardashian and Bieber may have come to an end after Bieber seemingly enjoyed a late night tryst with Baldwin at her NYC apartment. As the Daily Mail revealed earlier this month, Bieber and Baldwin were photographed leaving Game nightclub together before getting into an SUV and heading back to her pad.

For more Kourtney Kardashian, tune into Keeping Up With the Kardashians Season 12 on Sunday nights at 9 p.m. on the E! Network.