Rihanna and Chris Brown are no longer speaking to each other.

The on/off couple called time on their relationship once again recently and although they have often split and reconciled in the past, friends say things have deteriorated so much between them that they no longer speak.

A source told HollywoodLife: ''Negative. They're long gone. Ain't nothing going on with them. He let that go. He had to. It was the right thing to do. It was time but he wants her to be cool and I'm sure she is.''

Chris and Rihanna are so over that Chris doesn't even check in on her on Twitter or Instagram.

''He doesn't have time. He living his life and it's hard enough for him to keep up with himself. He ain't got time to be chasing Rihanna. That's done anyway.''

Rihanna has reportedly been partying a lot since ending her relationship with Chris, 24 - who is still on probation for beating her up in 2009 - because she is heartbroken that he is spending time with his ex-girlfriend Karrueche Tran again.

A source close to the 25-year-old star said: ''Pals have told Rihanna not to get upset about Chris and Karrueche. They think the best revenge would be living well and looking good, but so far Rihanna's answer has been to party the pain away.

''It's understandable that she'd want to escape her feelings on this but she's taking it way too far. Everyone around her wants her to get some help -- they're genuinely worried about her.

''She's not in a good place and looks like she's self-destructing. Her friends are really worried about her and think she needs to take time out to detox and refocus.''