You're suffering from two things here. A little oneitis and the dreaded "waiting" game of waiting for the perfect opportunity which never comes. I recommend forgetting about that girl or any other particular girls. Focus on socializing you're in College so Social Circle Mastery is you're best game plan. Braddock came out with an awesome series on this: Social Circle Mastery
http://www.puame.ca. If you want some help I'd recommend that series. I actually talk about this in one of my videos too.
http://www.youtube.com/watch?v=zqeT5Scn ... ideo_title
too many guys get into pickup and they want advice on "that" girl. Like I say in the video it's like saying "how do I win this fight". A better game plan is how do I get good with all women period. Socialize build a big social circle and focus on building a life style women find attractive. Go to the gym buy awesome clothes, play grounders and build snow forts and invite friends over for shit like jenga and twister. What ever was funny in 2nd grade is funny all over again. Go out to bars and sarge and while you're at school just get used to going up to everyone. In the case of what happened outside you're exam you should have started talking to just everyone. Socialize entertain everyone there and just ignore the girl you like. When you left the exam and saw her you could have leaned against a near by wall and waited for her and then started into qualification and DHV spikes. Basically if you want girls like this you have to become a ladies man.[/list]