Karrueche Tran vs. Chris Brown Beef? Rihanna's Ex Deems Girlfriend 'Disloyal' On Twitter, Model Slams Back 'What's More Important, Loyalty Or Your Desires?'

Karrueche Tran and Chris Brown continue going back-and-forth on Twitter. First, the on-and-off again couple's all "flirty" and "in love." Next thing fans know, they're posting cryptic messages about cheating and disloyalty!

So, is the troubled hip-hop crooner fighting with his stunning model sweetheart once again?

On Tuesday (July 22), Breezy tweeted:

Apparently, the suggestive posts have since been deleted. But not before Tran took notice... She responded with:

Major shade!

Twitter fans are going crazy over Tran's epic return. So, what's up with that?