Chris Brown has apologized to Karrueche Tran.

The 'Loyal' hitmaker - who recently announced they had ended their on/off romance - slammed the model on Instagram for her lack of support when he was jailed for a probation violation earlier this year, and even accused her of dating his rival Drake while he was behind bars. But he has now admitted he shouldn't "air out" his personal life on social media.

Alongside a picture of himself hanging his head in shame, he wrote: "Being young and dumb is one of my strong suits and emotional at best. I love hard and react impulsively when I'm hurt at times. I don't think social media is a place to air out or hash out personal problems and a n***a feel hella WACK for doing it.

"So I AM APOLOGIZING I live in a glass house and the same s**t that makes me great also is my curse. Everybody know I love that girl. I don't care how my image my look to the public because I'm still gonna be the best at what I do. I just want baby girl to know I apologize!(sic)"

Tran, 26, has yet to respond to the apology, but she also used the website to slam the 25-year-old singer over the weekend, accusing him of "repeatedly mistreating" her.

Writing on Instagram, she said: "I refuse to be repeatedly mistreated by someone that claims to love me. That's not love.

"And if that's what you define as love then I don't want it.

"If you can't love me the right way then don't love me at all.

"Don't be mad at me because I prefer to be happy."

Tran also revealed she's single on Twitter.

She said: "Looks like I'm a single lady again."

The pair first started dating in 2011, but have broken up on a number of occasions.

During one of their break-ups, Brown reunited with his ex-girlfriend Rihanna - who has also dated Drake - and has since admitted complicated his relationship with Karrueche.