Travis McCoy of the band Gym Class Heroes, who shared a rocky romance with Perry, says that her new relationship with Russell Brand will never last, saying they are too different, reports FemaleFirst.
A source close to McCoy revealed, "He’s livid, but getting a sick kick out of the idea their relationship will go under due to Russell’s philandering."
Brand, 34, is well known for having a very active and unusual sex life.
It was recently confirmed that Perry had introduced Brand to her parents.