A month old kitten is far too young to be taken from its mum. It should be 8 weeks old before you adopt one. Even when neutered a male and a female would most likely pal up better. So assuming that you have been responsible and had your female cat made neutral by a speying op. ,then I would be inclined to adopt a male kitten ,over 8 weeks old and have him neutered by a castration op. When he is old enough (maybe 6 months or earlier) ask your vet. Good luck This answer does not mean that 2 female (spayed) cats would not make good pals. The temperament of both cats would be a factor too.
