Relationships are formed on trust, they say - and Rihanna seems determined to prove this is true.
The 24-year-old has told friends she is not concerned that Chris Brown has been hanging out with his ex-girlfriend Karrueche Tran.
Brown, who recently reconciled with Rihanna despite still being on probation for beating her up in 2009, was spotted leaving his home in Los Angeles with model Karrueche on Monday.
They were spotted again later in the same car, reportedly on their way to a studio in Burbank.
It is only a month since Brown broke up with Karrueche so he could get back together with the Diamonds singer.
A source close to Rihanna told HollywoodLife.com: "She [trusts] him and no he [isn't] f**king around on her. And if you really want to know what's up, she never thought this girl was a threat or anything like that.
"If that was Rihanna some years ago, she would have let [Chris] have it. But over time, you grow up."
