Rihanna, Chris Brown UPDATE: RiRi Threatens to 'Finish Him Off' if they Split, Brown Turned On and Talks Marriage, Karrueche Tran wants Ex's Condo

It appears that there's no end in sight to the dramatic love triangle involving Rihanna, Chris Brown, and Karrueche Tran!  RiRi sent out some rather hostile tweets after Brown was spotted partying with ex-girlfriend Tran in Paris over the weekend, prompting rumors that the chaotic couple is inevitably headed towards Splitsville yet again. Although things seem to have smoothed over between Rihanna and her "Don't Wake Me Up" beau, reports now have it that the Barbadian songstress has threatened to "finish him off" if Brown ever tries to leave her (for Tran or any other woman). And apparently such threats completely turn the 23-year-old R&B crooner on! And as for Tran - word has it that she just can't let go of her former flame, or his luxurious L.A. condo! Hollywood Life reports that all Tran wants for Christmas is for Brown to sign over his apartment lease to her - permanently. Read on for all the juicy details.

All the drama started on Friday (Dec. 8) when Brown invited Tran to join him after his "Carpe Diem" gig for late night party-hopping around Paris (since Rihanna was unavailable - the "Diamonds" songstress was off performing for the U.K.'s "X-Factor"). RiRi then went on a livid Twitter rant, posting these angry messages (which have since been deleted):

@rihanna: "Examine what you tolerate."

@rihanna: "Goodbye muthaf**ker,"

@rihanna: "You give, you get, then you give it the f**k back."

Apparently the couple has since made up, and rumors have it that both gals now plan on following Brown around on his "Carpe Diem" Tour! Sounds kind of fishy... it doesn't seem like RiRi would be one for sharing her man. Especially after MediaTakeOut reported that the 24-year-old starlet promises to make Brown's life a living hell if he ever screws around on her. One inside source explains, "She says she's been through so much pain to get Chris back that his life won't be worth living if he breaks her heart again." While many other guys would probably take that as a bad thing, Brown is apparently turned on by such heated threats. The source continues, "Chris has told others that he wants to marry her and be with her forever . . . It's pretty scary - but instead of FREAKING Chris out, it seems to turn him on." What do Mstarz fans think of that - are such reports just crazy talk?

Whatever the case, rumors still have it that Rihanna and Brown plan on spending the New Year together in Barbados, and a secret wedding may be in the works...

As for Tran, she's not willing to give up the high-life quite yet. A source for Hollywood Life insists that Tran has been on "cloud 9" ever since her Paris rendezvous with Brown - and it looks like the singer may have made her some promises during their impromptu get-together over the weekend. Maybe something like buying her a condo for Christmas? The source claims, "She wants the condo [she's] been living in [that belongs to Brown]... I mean, she pretty much made it her home and she wants it permanently... [She's been on] cloud 9 or some other type of s**t so Chris did something right... Maybe Chris made some promises to her."

Wonder what RiRi thinks about that? Apparently, the songstress doesn't feel at all threatened by Tran. One friend tells Hollywood Life, "Rihanna is not stupid and she know his little side piece is there but she ain't tripping on the small s**t and trust, it's really small... Ri don't even pay attention to that because there's no point... She would never give time or spend a second thinking about another bi**h that's not even in her same league. Come on now, there's really just no comparison and she could care less about another bi**h or where they are in world because she and Chris know what time it is!"

Wow, Rihanna-Brown-Tran gossip overload! What do Mstarz readers have to say about it?

RELATED NEWS:

Rihanna and Chris Brown Fight, Make Up: Singer Parties with ex-Girlfriend Karrueche Tran in Paris, RiRi Bashes then Forgives Beau on Twitter 

Rihanna and Chris Brown Wedding: Planning to Tie the Knot in Barbados over the New Year, Show Up to Grammys as Husband-Wife?