Kim Kardashian, Chris Brown Hook-Up? Kanye West cancels wedding over relationship with Rihanna's ex-boyfriend?

Kanye West is allegedly threatening to cancel his wedding after finding out his bride-to-be, Kim Kardashian has reportedly hooked-up with the "Loyal" singer, Chris Brown.

According to RadarOnline, the brief relationship with Brown happened way before she ever made anything official with the "Yeezus" rapper.

 "Even though the encounter between Kim and Chris happened long before Kanye came on the scene, being Kanye, he's still intensely jealous," one source revealed.

The rumor mill is spinning about a brief hook-up the 0pair had during a run-in for promotional work for his new record where an insider said the pair hit it off, "There were definite sparks, but she insisted to Kanye that nothing happened between them." The insider added, "That hasn't stopped Kanye from having a major jealous meltdown."

West may want his Vogue-a-licious suture wife to avoid association with the jail bird due to the 2009 Rihanna beating incident. The rapper has made it clear that he treats Rihanna like a sister and a hatred for the R&B bad boy stemmed from the infamous domestic issue.

 "He's obviously someone Kanye doesn't believe he and Kim should have anything to do with." The source said.  "Especially now with their Vogue cover, Kanye knows he and Kim are an A list couple who don't need to be tainted by associating with Brown in any way, shape, or form. Kanye gave Kim a stern warning to avoid him in the future!"