The 4 power couples wined and dined with friends inside, and were all smiles until they stepped out ... Kanye gave a 7 minute speech at that night's award show, despite the 4 minute time limit. Diddy and Cassie have called it quits following an explosive argument that ended with cops rushing to her home ... We're told Diddy got pissed off and suspicious enough to grab her phone and start scrolling through.
The actor and rapper went cool in a black kimono as he hit the carpet.
Diddy and the "Me & U" singer, 29, who've stayed private about their romance for the most part, have been dating on and off since 2007.
Cassie opened up about her longtime beau with Madame Noire in 2013."Just being around him is a completely inspiring experience," she said that October.
Diddy eventually came home and returned the phone, but then took 2 cars parked outside.
Cassie had told her mom about the phone incident before Diddy came home and returned it, and the mom called the cops on him.