kajol and karisma

I recently read that ajay and karisma were an item earlier and kajol was mean to karisma after she started dating ajay. is this true? karisma's dad always mentions kajol as one of his favorite actresses and Kajol and kareena seem to really like each other. i remember karan asking kajol about rani or kareena and she said kareena. kareena always raves about kajol too. kareena and ajay have worked together a lot too so i don't think there is any awkwardness between kajol and karisma? is this just wishful thinking on my part?