Chris Brown and Karrueche Tran — LIVING TOGETHER AGAIN!

Exclusive 0524-chris-brown-karrueche-getty Call her crazy … but Karrueche Tran and Chris Brown are full-on LIVING TOGETHER … our sources has learned.

Sources close to the couple tell our sources … they hooked up days before his 24th birthday earlier this month and she”s been staying at Chris” Hollywood Hills home ever since.

Though she”s keeping her own apartment — smart — she”s already moved most of her clothes and other personal belongings to his pad.

And it”s not like they”ve been secretive … they”ve been spotted everywhere lately, hitting up the Billboard Awards afterparty and even rear-ending a Mercedes together.

Karrueche”s one persistent scorned lover — when Chris first dumped her back in October for Rihanna  — she vowed to win him back, as our sources first reported.

So where does this leave Rihanna RiRi and Breezy officially called it quits a few weeks ago … but they”ve ALWAYS had an on-again, off-again relationship … and Chris has made it no secret — he loves “em both

Hey Karrueche … you ever heard the expression, “Fool me once …”