Incomplete

"Will you come with me?" He asked unsure of himself.
She contemplated for a while.
"Yes."

Catherine had a deep attraction for her best friend, Chad ever since she met him. Finally the day arrived when he asked her out on a date. Well, not really. He just asked her to accompany him to a party. But Catherine wants to spill her heart out to him on that day no matter what.

What happens next?