Brown ‘can’t talk about Rihanna’

Chris Brown is reportedly not allowed to talk about Rihanna in rehab.

The singer is currently undergoing three months of treatment for anger management issues.

And therapists allegedly believe Chris' 2009 domestic abuse incident with Rihanna still has a powerful toxic impact on him.

"[Chris] doesn't think or even talk about Rihanna because she's one of the negatives in his life," a source told Hollywood Life. "She as a person, is not negative, but the events and situations that happened when they were together were extremely negative and stressful on Chris. He talks about that in therapy, but when the sessions are over, they tell him not to discuss or even think about her."

Chris has apparently been instructed to focus on positive thoughts only, and to work on coming to terms with his actions.

The pop star is encouraged to talk about Rihanna in therapy sessions, but not the rest of the time.

"It's too painful and he already paid his price for what he did but everyone only seems to focus on that and it's killing him softly," the source added. "So he's been told by professionals to erase those negative thoughts and situations he had with her from his mind."

Chris and Rihanna have had an on-off relationship over the past year, but he reportedly ended it in May. According to the musician, he was not ready for a serious relationship.

"The way I look at it is, I am always going to love that person," Chris told hosts on the Kyle and Jackie radio show. "But people have differences and people have different wants and needs. And at the end of the day, she's a young girl. I can't really be focused on wife-ing somebody that young."