Chris Brown and Rihanna Engaged in Twitter Feud / "She Ain't You" Singer Spotted w/ Karrueche Tran while RiRi's on "Diamonds" World Tour [INTERVIEW]

Chris Brown and Rihanna this. Chris Brown and Rihanna that. This relationship [from Hell] never ceases to amaze the Internet. You read it. So I write it.

The latest in the on-again off-again relationship drama has apparently found its way to Twitter. Earlier today Chris Brown tweeted:

"She's not mine if she's everybody else's." The "she" in question is allegedly Rihanna. The tweet is supposedly a reaction to a comment Rihanna made yesterday via Instagram.

"If I drop all of my h#@$ for you and we still don't work out you owe me some h#@$."

Brown, who's been spotted with former flame Karrueche Tran, confirmed his and Rihanna's break-up during an interview with Australia 2Day radio show, "The Kyle and Jackie Show." When asked if he though Rihanna was his soulmate, Brown said he will always have feeling for the Barbadian beauty.

"The way I look at it is, I am always going to love that person," he said. "But people have differences and people have different wants and needs. And at the end of the day, she's a young girl. I can't really be focused on wife-ing somebody that young. At the end of the day. And I'm young too. So I can't focus on that right now. I just need to fast forward and be a man and be the best Chris Brown I can be, instead of worrying about whoever else is going to be in my side pocket."

Chris Brown celebrated his 24th birthday party last weekend, while Rihanna is on the road for her "Diamonds" world tour.