The 24-year-old singer - who has recently been romantically linked with actor Ashton Kutcher and her former boyfriend Chris Brown - always turns to her close pals for advice and says they are never afraid to tell her the truth about anything. Asked how she stays grounded, she said: "My experiences in life and having a good group of friends. They`re brutally honest and I need that. "I turn to my friends all the time - I trust them so much. I don`t care what the media think but I respect their opinions and their advice is never shady." Though the `Battleship` star loves being with her friends, sometimes she needs to take time out to be alone. She told more! magazine: "I don`t like being lonely, so I like hanging out with my friends. But sometimes you need that time on your own. "I just had a weekend like that where I didn`t see anyone, I didn`t even watch TV. I slept for two days! I barely made it into the kitchen."