A: If he was pursuing you and you seem to care about him so much, why didn't you get with this guy? It's natural to feel upset that you lost his attention, but it was probably your fault for not showing any interest in him.
A: No way! You're fine the way you are. Size 6 is a sample size and size 9 is considered average. You should also take into account that some clothes are just made smaller than others, so no worries :)