Three months ago, Katy Perry sought revenge on her ex-husband, Russell Brand, when she channeled her anger in a new bitter ditty "Part of Me," but these days, Perry is singing a different tune.

"Katy's been trying to get him back!" a close Perry pal tells Us Weekly of the eight-time Grammy nominee, 27. "She's a lost soul right now."

PHOTOS: Katy and Russell's zany romance

What led to the singer's change of heart? A solo trip to India April 3 -- the same place where she wed Brand, 36, in 2010. "She'd already been missing Russell," an insider explains. "Being back there stirred up even more old feelings."

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Perry may pine for her ex, but a friend of the singer tells Us a reconciliation with the British comic -- who had a series of flings in the wake of filing for divorce December 30 -- is a long shot.

VIDEO: Why did Katy Perry and Russell Brand call it quits?

"Right now, Katy and Russell are trying to get to the point where they can at least be friends," says a Perry pal.

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