We still find it hard to believe that he'd slum it quite this much!

Justin Bieber and Kourtney Kardashian reportedly partied together at STORY nightclub in Miami on Sunday night, thus reigniting those secret hookup rumors! The reality star was in town to celebrate pal David Grumman's birthday, while JB was on a stop of his Purpose tour. We can't help but think that the mother-of-three was looking any excuse to put herself in The Biebs' path, and it makes us feel like she's totally desperate!

The Canadian crooner arrived at the club around 12:30am and was there less than a half hour before the Keeping Up with the Kardashians star made her move.

"At around 1 a.m. he disappeared for a few minutes only to reenter the DJ booth with Kourtney Kardashian in tow," a source dished to Us Weekly. The E! starlet brought along pals Larsa Pippen and Jonathan Cheban for her rendezvous.

Doesn't Bieber realize he's boning the ugliest and most worthless member of the K clan? It seems like she's trying to distract him from that fact with bathing suit selfies like this one below!