Washington, October 14 (ANI): Singer Katy Perry’s ex-lover/singer Travis McCoy has reportedly said that her new relationship with Russell Brand will ultimately fail.

The Gym Class Heroes star, who has been involved in an on/off relationship with the ‘I Kissed A Girl’ singer, apparently believes that the British comedian’s confessed promiscuity will be the reason for the failure.

“He’s livid, but getting a sick kick out of the idea their relationship will go under due to Russell’s philandering,” Contactmusic quoted a source as saying.

Meanwhile, it has been reported that Katy wants to introduce Russell to her religiously inclined parents, Keith and Mary Hudson.

An insider said: “Katy is sure that, after they get used to him, they would approve of Russell, but she wants to get that initial meeting out of the way as early as she can.

“Keith and Mary are devoted to the church and hold the institution of marriage as a central core of their beliefs.

“They are genuinely happy for their daughter, but want to give Russell the once-over.” (ANI)