Justin Bieber and Kendall Jenner's PDA at Riccardo Tisci's Birthday Party Caught on Instagram, Couple Leaves Party Together

Justin Bieber seriously has a thing going on with models. Over the weekend, the Canadian crooner was spotted in PDA with none other than rising supermodel, Kendall Jenner. In addition to their Instagram PDA, both were allegedly spotted leaving Riccardo Tisci's birthday party together.

Things have been pretty complicated around Justin Bieber. Late last week the singer was embroiled in an alleged fight with Orlando Bloom over his estranged wife, Miranda Kerr. Now, another model has been caught in Bieber's web and it's none other than Kendall Jenner.

The "Keeping Up with the Kardashian" star flew over to Ibiza, Spain to celebrate the birthday of Riccardo Tisci, Givenchy's artistic director. Of course, also in attendance was Justin Bieber. The pair posted a number of PDA pics on Instagram that has confused a number of their fans as to what the real deal is between them.

Now, additional reports claim that Justin and Kendall not only enjoyed each other's company at the party but they also left together.

"Kendall and Justin were inseparable for most of the night. Justin has always been good friends with the Kardashians, so he and Kendall go way back. As soon as Justin arrived he made a beeline for Kendall the moment he spotted her. They were seriously flirting and kept going in and out of a photobooth together. There was lots of laughing and teasing and they were taking endless selfies," reports a source to the Sun, adding, "After partying for about two hours they quietly slipped out of the party together and were seen holding hands."

Kendall Jenner joins Bieber's growing list of models linked to his name of which includes Chantel Jeffries, Ella-Paige Roberts Clarke, Ashley Moore, Yovanna Ventura and Danielle Knudson. For now, fans are left to wonder what exactly is going on between Kendall and Justin.

Of course, both have been friends before which prompted reports of Justin dumping Selena Gomez for Kendall. As for Selena, the "Come & Get It" singer is reportedly "disgusted" with Bieber for having hung out with the 18-year old model.

"She's disgusted with how he's behaving. She's not hurt, she's actually grateful that she's not with him anymore. In her opinion, he's acting outand she would rather have nothing to do with him," reveals a source in an exclusive report by Hollywood Life.