>>44665654>Hug? Yes, so many times!
>Kiss? Probably, I could see James as the more affectionate trainer in private.
>Have Sex? No, as interesting as the implications for this would be, we've never had any confirmation of Humans and Pokemon in the anime universe having romances yet. let alone a sexual one. Plus James doesn't seem to reciprocate her feelings, so it wouldn't go beyond friendly hugs and kisses. Its just fuel to the fire that Pokemon can fall in love with humans.