It means that he has a nickname for you. Whether this is a pet name or just a joking nickname, is up to what he means by it. It may or may not mean that he likes you, and a nickname is very vague, so the only way you can truly tell if he likes you is to ask him yourself.
Not necessarily. "Missy" can be a playful or friendly term used to address someone, especially if that person is younger or seen in a more familial or mentorship role. It may not always imply romantic interest.
He likes you.
he likes her
He probably likes you
It means that he likes you or he is a creepy stalker
He could just be joking, but there's a possibility he likes you.
It probably means the guy likes looking at the girl's butt.
Yes, it means he likes you as a friend, like a homeboy or one of the guys.
He likes you.
When a guy calls you a dork my first instinct is that he likes you. NO!
he likes you and wants to marry you!!!!
he wants to get down with u and he really likes u
either you are really good mates or he is obsessed with you.