The `Stay` singer - who is currently on her `Diamonds` world tour - has reportedly been going out a lot since ending her relationship with her on/off boyfriend Chris Brown recently 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 told the Belfast Telegraph newspaper: "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." Rihanna`s father Ronald Fenty recently said he thinks she will reunite with the 24-year-old `Fine China` singer in the future. He previously said: "I`m still his [Chris Brown`s] no.1 fan - I still like Chris regardless. They have a very passionate relationship but if they split up it does not mean it`s forever with them. In a couple of months, they`ll be back together. "She [Rihanna] seemed to be doing OK. We talked about how the tour was going, I asked her if she partied and she needed rest and she said, `I`m going to be OK, dad.`"