Chris Brown and Karrueche Tran 'Friends with Benefits?' Breezy NOT Dating Model Despite Sexy PDA, Rihanna Relieved? [VIDEO]

Chris Brown and on-and-off again girlfriend Karrueche Tran got pretty cozy at the Annex magazine party in L.A. over the weekend - but according to insiders, the two aren't actually dating. Breezy and the aspiring model are simply "friends with benefits" - and both are totally cool with that!

The 24-year-old X crooner and Tran were spotted partying at the Sofitel Hotel on Friday evening (Oct. 18)... and according to fellow partiers, the (ex) couple showed-off a LOT of PDA. One "trusted" source tells GossipWeLove.com:

"After mingling with partygoers, both Chris and Karrueche were seen in a corner of the event getting real cozy... doing things that friends don't usually do..I'm talking smooching and sticking real close together. Adding, "... and it seems like they are just trying to keep their newly rekindled relationship under wraps."

Check out some photos here.

The duo was also spotted leaving the event together early Saturday morning:

But according to a source for HollywoodLife.com, the two are definitely not dating. Right now, it's all about having fun:

"I mean, they're friends with benefits and have been for a long time now. Yeah, they kiss but that's PG compared what they do behind closed doors," Breezy's alleged friend said. "That's what they do and nobody should be surprised... They had a good time at the party. They left together and did what they did and that's it. He likes her but he's not about to be in a committed relationship with anybody. They both like s---- just the way it is. They're friends with benefits and it works."

Another source adds, "[Brown]'s straightforward and honest with Karrueche. For years, he thought he always had to lie to females and sneak around. But a wise G told him that if he's ALWAYS honest, sh-t always works out for the best and females respect that. Since he's been doing that, his life has been carefree."

Wonder what Rihanna thinks of this "FWB" relationship... if that's truly what it is?