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The actress has previously dated fellow stars Ranbir Kapoor and Salman Khan.
A source told The Times of India: "No looking for or falling in love in the film industry for Katrina. She has learnt the hard way that love is a rare commodity in the industry.
"She wants to avoid any more emotional stress in the future and just focus on her work. No emotional involvement with co-stars, no matter what the temptation.
"Katrina has told her mother to find her a guy. She has decided to go with whatever 'momma says'."
They added that rumours of her acting opposite ex-boyfriend Kapoor were false.
"Katrina is done with Ranbir. She didn't want to spend time with him and that's why she decided to opt out of Ayaan Mukerji's film," they said. "In fact, Katrina will not consider offers to be cast opposite Ranbir in the near future."
In August 2011, she denied that she had turned down a film because Kapoor was in the lead role.
Kaif is rumoured to have ended the relationship after media gossip that Kapoor had become involved with Rockstar actress and former model Nargis Fakrhi.
