I can't imagine knowing at 20 years old what I know now about relationships with women. I understand the feelings you have, this girl is the end all be all of your existence. I don't think there is a more emotionally charged feeling in a young guy's life than being in your age range and falling in love with a girl. The only thing equal and opposite to the feeling you have now is the feeling you're going to have if she does not reciprocate your feelings toward her. There will come a moment, it will be like a light switch has been thrown, where you will realize it just isn't going to happen. In that moment, you will feel more heart sick and worn out than you ever have before. It will seem as if time has stopped and the fates have ignored your one and only true wish, to be with this girl. Try to remember, if you can, that this moment is just that...a moment. In a few months, it may take longer, about a year in my own experience, time and perspective will assert themselves and dilute the pain. I'm not sure the pain every really truly goes away for a guy when it comes to striking out with a lady, especially one you are smitten on. Looking back thru 40 year old eyes to my 18 year old self, my infatuation, pursuit, relationship, and ultimately, being kicked to the curb by the girl I thought hung the moon and stars seems a little bit comical and silly to me now. I understand this doesn't help you much now, but when you're married someday to another woman, and your wife is also your best friend, when you couldn't imagine being with anyone else except your wife, your early endeavors at romantic relationships will seem to pale in comparison. Basically, don't get too hung up on this girl dude, you might end up with her for the rest of your life, but the odds are against it. Your blood will cool with age amigo, getting older has that effect, it has to or I don't thing many of us guys would be able to make it to old, grouchy, SOB status like me....