My cat Toots is not especially nice to strangers, in fact she is terrified of everything and pretty much acts feral... except with me when we are all alone.
I sleep with her every night, and I like to believe we mutually makes each other's life nicer, easier, warmer.
She was a kitten who was doomed at the shelter, the vet i had gone to when the love of my life "Kitty" was dieing, happened to pick up some kittens from the shelter who needed medical attention for a bad cold. Toots had almost died the day before and when they handed her to me she sneezed blood, then started purring in my arms.
Love at first sight is absolutely real.