First of all, school is number one. Don't fuck up your schooling cause of that slut. No amount of shame will offset the amount of shame associated with being a loser because you didn't finish your schooling. Second, she sounds like a good match for you being that she is very focused and quiet. You sound like you need a nice girl who is grounded. Three, don't overanalyze this. I told you to ask her out on a date not propose with a box full of doves and a sonnet. If anything, tell her you owe her a cup of coffee for being a good friend with the hoodie situation.

To give you some perspective, I dated some girls who loved the spot light early on and none of them made great girlfriends. My fiancé, on the other hand, was a book worm throughout her schooling, hates being the center of attention, and is a fiercely hard worker. She is an incredible partner and she makes me an infinitely better person.

You are able to rant because I am completely objective to the situation and what that girl did was shitty. Also, its happened to me twice in much worse ways so I know what you are feeling.