Even though I loved this movie there is a huge plot hole/mistake in it. The main guy narrates his story of how he met his dream girl in the elevator and spoke to her so all has to do is speak to every girl in the dorm and eventually he'll recognise her voice.
shareThat bothered me too, and that totally wasn't the same one!!! The silhouette had an ugly profile, tiny boobs (as he mentions), and short hair, oh and it sounds NOTHING like the actual one. The actual one had a beautiful profile, and decent breasts, long wavy hair, necklaces... and there is no way in hell I believe that he had a life altering sexual experience, fall madly and passionately in love with her and not remember her voice, or the way her body felt, or how her face felt, or the way she smelled, or any other details.
sharehe was drunk
This might be reaching a little far, but I think I can explain.
The whole theme of the movie was about learning to understand women better. The night in the elevator was Matt's first time, so he didn't quite know how to connect with all those experiences (touch, scent, voice).
As far as not recognizing her voice, and this fits with the theme, Matt had a very shallow perception of women. For example, they all practically look and sound alike. Through Matt's point of view, we're shown the women of the Virgin Vault as stereotypes (the Tanner, the Algae Eater, the Purple Girl, etc.) But only after Matt starts talking to them, getting to know them, and connecting with them, we start to see more depth in them.
I know it's still a little difficult to believe that he was so shallow that he couldn't distinguish her from the rest of the girls (one of the few flaws in the movie), but it fits with the theme.
"Fate takes all the fun out of free will."