YES
You're dating.
yes totaly
No. It could just mean he's polite.
YES, he DOES mean it! So don't fool yourself.
as a guess, yes
dont go to them his cheating on you
Yes, if he says it seriously. If he says it sarcastically, he is just being a wise guy. Don't do it if he says it sarcastically because he will make fun of you even more.
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.
Yes it does.
Answer Yes, that is a good thing.
No he is joking around