I want my first girlfriend to be someone special :wub:
Baaaaad reasoning there!
Doing something date-ish with a woman once does not make her your girlfriend or commit you to anything. However, dismissing the her because she's not 'special' loses you the possible opportunity find out that she does, in fact, meet you requirements :facepalm:.
EDIT: If you say no based on a stupid reason like that, I will personally come down there and smack you across the back of the head.