Butterflies

I spied a green light from my roommate's view,
So little light in wintertime.
I crossed the street that you crossed too,
But I still won't cross the line.

It's not as easy as it seems,
To do what you think is right.
Am I still in your dreams,
Or was it just that night?
I searched my room for a souvenir;
So little of you I posses.
Did not know how to take your remarks,
But I took them none the less.

It's not as easy as it seems.
There's nothing with you in the dark,
Am I still in your dreams or was it just a lark?

I haven't seen you in a week or two,
I've used caffeine as a crutch.
You gave me an invitation once.
What gives you butterflies don't give you much.
What gives you butterflies?