Days after being spotted together in Hollywood, rumors are flying that Fine China singer Chris Brown and his on-again-off-again girlfriend, Karrueche Tran, have split up. 

Speculation started on Tuesday, Oct. 22, when Brown tweeted, "Don't sleep with a white tee on next to ya shawty. Gon wake up wit footprints on ya back." A couple of hours later he followed up with, "Back turned walking away from the situation."

Tran and Brown also unfollowed each other on Twitter that day, according to International Business Times.

The singer and mdoel spent the weekend together and on Oct. 18 were spotted at Halloween Horror Nights at Universal Studios Hollywood. They seemed to enjoy the outing considering that Brown afterwards tweeted, "I had so much fun at Halloween Horror Nights."

Tran also took to the social media website, posting, "Universal Horror Nights was the best...I might have nightmares tonight." She also uploaded a picture of her and Brown along with two guests at a Hollywood party on Oct. 19 celebrating his Annex Magazine cover. 

The two seemed to be going strong especially since Brown gave Tran a shoutout in DJ Khaled's new song I'm Still, which was released earlier in the month.

"You n---as mad 'cause you f---in' with dem regular hoes, and ain't nothin' better than my Asian/ Hol' up wait, n---a f---in' with my patience, 'cause I'm that n---a give a f--- about a racist," Brown raps in the song.

He also allegedly dissed his ex-girlfriend Rihanna in the same verse but without directly saying her name. Brown sang, "Now every n---a in the industry done f---ed my bit--/And all my n---as said, 'I told ya." 

Tran and Brown have not commented on their rumored break-up. They are reportedly expected to host a party together during Halloween weekend on Nov. 1 in Las Vegas.