The guy means good, but no one can stick to such a statement
I means that you are special to him and that you are very pretty
Depending on the girl...It can be important.....I mean its important manly for the guy to be sexually interested in her but not upset when she says no...because she will
It means that he cares about you.
Depends on the guy, he could be saying that because he isn't mad just upset, he could be mad but doesn't want to upset you, or he could be saying that because he isn't mad or upset you just took his impression the wrong way.
It means he himself is very boring.
It means you have no boobs :( And it means that he is not a very nice person.
It almost certainly means that he's not very well educated.
No he is joking around
If a guy says that you are pretty it does not mean that he likes you. He could like you, or he could just be paying you a compliment.
Personally i think that it is very romantic for a guy to sing to a girl, even if the guy doesn't have the best singing voice, it is still very romantic.
if a guy says your wonderful it definitely mean that your very different from others and that your are everything he is looking for in a girlfriend and that your very special to him and he really loves you