This Window and the Rain

I can hear the rain drops thud against my window,
The glass is thin and cold, I can feel the drops,
Beyond this window, a voice is heard,
But the rain drops morph that voice into a murmur,
My eyes open to search for the voice outside,
The rain blends the dull colors, but a shape is seen,
A girl, that's all I can hear and see,
Is it someone I know, or someone I do not?
Your presence mystifies me,
My curiosity compels me to meet you,
But this glass window, the rain, stops me from knowing you.