Rihanna and Chris Brown back together on the 'down low?' Girlfriend Karrueche Tran rids Breezy's home of 'bad habits' during rehab, jealous of RiRi photos?

Despite Chris Brown's recent arrest and rehab stint, on-and-off again girlfriend Karrueche Tran remains loyal to the troubled "Love More" crooner. In fact, the aspiring model recently helped Breezy's mom Joyce Hawkins rid the singer's California bachelor pad of his old "bad habits." While doing so, Tran supposedly ran across some "secret" photos of Brown's ex, Rihanna. And how did she respond? Apparently, she's totally cool with it.

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An alleged insider tells HollywoodLife, "Karrueche has no problem with Rihanna whatsoever... She's stumbled upon pictures of Chris and [Rihanna] in his house, but she didn't throw them out of cut them up or anything. She's not that girl. She's not the jealous type."

Tran simply wants to help Breezy so he can live the best, most healthy life possible:

"[Joyce and Karrueche] don't want him coming back to a place that reminds of him of a club, so they're tiding it up and making it feel like a home," the insider explains. "[Karrueche is] taking care of the dogs and making sure things are in order, just like any woman would do when her dude is down."

So... does Breezy's main squeeze think he should trash the photos of Rihanna? Nope.

"She thinks it's good for him to keep pictures of her. [Chris and Rihanna] had a good thing at one time and she thinks it's important to remember good things in his life, even if it's with another girl. Her main thing is getting Chris healthy and back in her arms."

The source concludes, "She knows he's in a good place now... She can't wait to meet the new and improved Chris."

Meanwhile, rumors still suggest that Rihanna and Brown are still talking on the "down low."

What do Mstars readers think... should Breezy just go solo for awhile?