Chris Brown and Karrueche Tran Spotted Together Post-Break Up, After Brown Parties and Cozies Up with Rihanna in Beverly Hills [VIDEO]

Looks like the infamous Chris Brown-Rihanna- Karrueche Tran love triangle continues - Brown was spotted hanging out with ex-girlfriend Tran at a local gas station and Burbank recording studio on Monday. Although the two have broken up (and it looks like a rekindled romance between Brown and Rihanna is currently in the works), inside sources confirm that Brown and Tran remain "really good friends." Still, hanging out with an ex-girlfriend just after a fresh and rather abrupt break-up? Not to mention Brown spent the weekend with RiRi in Beverly Hills - the two were spotted getting pretty cozy at a Hollywood launch party. So wonder what Rihanna thinks of Brown and Tran's innocent play date?

23-year-old Brown and Tran were spotted together leaving the "Don't Wake Me Up" star's California crib on Monday, Oct. 22 (in separate vehicles). The duo jetted off to a local gas station, where Brown's body guard was spotted handing Tran over a $20 bill to pay for her gas (how gentlemanly of Brown). The two then continued on to a studio in Burbank (still in separate cars).

Check out pics of Brown and Tran's gas station rendezvous here.

No word on where Rihanna was at the time of the "friendly" hangout- although the R&B princess and Brown just spent the weekend together partying in Beverly Hills. The duo was spotted locking lips and cuddling all night at a launch party. One source told The Sun, "They were hugging, making kissy-faces at each other, laughing and sharing drinks and a cigarette rollie. It's clear that they're making no secret things are back on track." Check it out:

RiRi did tweet this on Sunday: "Temptation isn't a sin."

Rihanna and Brown are not an official "couple," but they seem to be working things out since their dramatic break-up back in 2009 (Brown was charged with domestically abusing the "We Found Love" songstress that winter).

An inside source tells E! News that Brown and Tran remain very close friends, even after Tran initially felt "burned" by Brown's decision to break things off - they've been spending time together to work on a photo shoot.

Apparently Brown broke up with Tran because he didn't want to see her "hurt" by his rejuvenated friendship/relationship with Rihanna.

So what do Mstarz readers think of Brown splitting his time between Tran and Rihanna?