I have both a male and a female kitten. They are both 8 mos. old. I have noticed by far that the boy is much, much sweeter and more affectionate. The girl is very docile and sweet too - but more of a loner. The boy is constantly following me and jumps on my lap any chance he gets. I think males are by far more sweeter. I have also heard that from a lot of people as well. They say, hands down, males are more loving then females.