<p>With the new details you provided, I think this girl is behaving kinda lousy. Most girls who have a BF manage to casually work it into the conversation (eg. "My BF likes the Colts too") early on. Certainly by the time you were asking her to meet for a run she should have brought it up. And that "you want to talk to me, don't you? stuff? Sounds like she's thinking "you want this but I know you aren't going to get it!" So personally I don't like how she's acting. Why is she doing this? Maybe she likes flirting and being reassured how pretty she is by having guys always after her. Maybe she's thinking of breaking up with the current BF and is looking for a new guy who is interested. Don't know, and it doesn't really matter. The key point is right now she does have a BF.</p>
<p>What follows is just my opinion. You can be baffled and worry about it, try to figure out what various confusing and contradictory actions/words might mean. Or you can just forget about it and move on, which is what I advise. Let the future unfold as it will, while you wait with an curious but detached attitude. I'm not saying don't talk to her or spend time with her. It sounds like you have some things in common, and the 9 mile run? You just went farther than I have ever at one time in my life! But emotionally, move on.</p>
<p>Now this may seem easier said than done. But there's a trick, and you've probably already done it in sports. There are a lot of sports, for example, where you can hurt your performance by keeping your jaw clenched. Now coaches can watch you practice and remind you when you're doing it, teach you to check the tension in your jaw periodically, and so on. But they don't do that. There's a much simpler approach that solves the problem. They hand you a stick of gum; if you're chewing on gum you can't have a clenched jaw, simple as that. </p>
<p>The principle is called "incompatible behavior". And you can apply the same thing here. How? Start pursuing some other girls. Let's not lose sight of what you've done here. A week ago you felt nervous about approaching a pretty girl. But you did it, and it turned out ok. You were worried about calling her after meeting her, but you did that and were able to carry on a great conversation. So while the butterflies may not have disappeared, you have just seen it work and can do it again. </p>
<p>So go out around campus and make it your goal to approach 3 girls a week, girls who you would have been reluctant to talk to last week. Make it a real goal, as important to you as your workouts. There's no guarantee each girl will want to talk to you, some may have BF's, etc, but that's not the point. You just have to find one. And in the meantime while you're talking to these girls, calling ones you've met, etc. this first girl is not going to be filling all your thoughts. Incompatible behavior. As for the 1st girl, she better move fast is she wants to be going out with you, because a cool and confident guy like you isn't going to be around all that long. If you end up dating her, great; if not it's her loss, there's some other girl out there just as interesting and fun for you to be with.</p>