Rihanna and Chris Brown have hit a rough patch. Again.

Their turbulent relationship appears to be in trouble, as they reportedly got into a big argument after he didn't visit her in Vancouver, according to Hollywood Life.

Chris was supposed to visit Rihanna while she was on tour in Vancouver on April 1, but he didn't show up. 

“Chris was supposed to be with Rihanna and spend a night, but at the last minute, he flaked and told her some bulls**t-a** excuse, and she was over it,” says a source. 

“She feels like he’s not serious enough at times and it frustrates the f**k out of her," the source continues. "She blew up at him over the phone. They went back and forth, and I guess he didn’t want to hear what she had to say, so he hung up.”

Apparently, Chris doesn't like when Rihanna makes suggestions about his behavior.

“She tries to talk to him on a serious level, but he doesn’t hear her,” the source adds. “Chris thinks Rihanna tries to tell him what to do, but she isn’t. It’s just love on her part and sometimes he doesn’t see it that way.”

The two haven't seen each other since the scuffle, but they are said to still be together.

“She just wants him to be more mature,” says the source. “They’re together. They’ll be alright. They’re cool.”

Stay tuned  we're sure their relationship status will change in another minute or two.

Source: Hollywood Life