It's hard to keep track of Justin Bieber's personal life these days. One minute reports are swirling that he and Kourtney Kardashian are getting hot and heavy, the next he's rekindling his romance with Selena Gomez. The singer's romantic roster has been growing by leaps and bounds lately. Is he enjoying the single life, or is Justin Bieber looking for something more serious? Here's a rundown of his recent relationships, and where they stand as of now.

Kourtney Kardashian
 

It was gossip fodder made in heaven: Justin Bieber was hooking up with Kourtney Kardashian, who was on the outs with her longtime partner Scott Disick. Drama and intrigue abounded (none of which pleased Disick in the slightest). Unfortunately, the hot and heavy relationship fizzled out remarkably fast; now Bieber is claiming that Kourtney used him to get back at her famous ex.

Selena Gomez
 

Ah, Selena and Justin; they're one of those celebrity couples people just don't get over. No matter how many times the two break it off, they seem to always reunite--at least for a little while. Although currently Bieber and Gomez have gone their separate ways, it's painfully obvious that the two still care deeply for each other (and the singer himself says that a future reunion is not entirely out of the question).

Hailey Baldwin
 


The statuesque model (and niece of Alec Baldwin) has recently been spending a significant amount of quality time with Bieber. The two have appeared in numerous photos getting very cozy (including sharing a smooch heard across the Internet); Baldwin even convinced Bieber to temporarily adorn his head with cornrows during a sun-soaked vacation together at St. Barths. Although neither has officially confirmed the relationship, it seems that the two are much more than just friends.

Adriana Lima
 

Rumors flew wildly that in the wake of her marriage falling apart, Victoria's Secret model Adriana Lima sought comfort in the arms of Justin Bieber. But while sources close to the duo reportedly stated that they were regularly hooking up, Lima herself shot down any such ideas (and also insulted Bieber in the process). Either the rumors were nothing more than wild gossip, or the short-lived love affair ended on a decidedly sour note.

Ariana Grande
 

congrats @arianagrande on your number 1 song. #arianabieberduet ?? A photo posted by Justin Bieber (@justinbieber) on May 1, 2014 at 5:14pm PDT


Bieber certainly has a habit of getting caught between bickering couples: this time the singer's duet with pop star Ariana Grande (and his appearances at her concerts) led to fierce speculation that he had formed a wedge between Grande and her boyfriend Big Sean. Further reports indicated that the rapper was not especially happy about the two getting grabby on stage; although Big Sean emphatically denied this, it did nothing to dampen rumors that Grande's chemistry with Bieber onstage had led to some serious relationship issues.

Tags: Justin Bieber Selena Gomez Hailey Baldwin kourtney kardashian Adriana Lima Selena Gomez Justin Bieber