There are as many personality types as there are guys. Many guys
find a "shy Girl" to be alluring. There are also many guys who love
the challenge of getting to know a shy girl.
The most important thing to be is yourself. If you are a bit
introverted, do not fight it. It is better for the guy you are
interested in to find your shy nature to be endearing rather than
to force trying to be someone you are not.