How can I emotionally detach myself a bit?

[Germaine]

Okay, here's my situation. It's a LONG story, so bear with me. I'm 18, and I recently graduated high school. I commute to a local University a few days a week and babysit for money the others. There's this girl, currently a senior in high school (so I met her last year when she was a junior). I was pretty neutral towards her during the school year when she was in my classes to be honest. She was a very pretty girl and very sweet though, I had noticed. If someone looked down, she would always be the first to ask what was wrong. I started to develop somewhat of a friendship with her toward the end of the school year, and I'd say we were pretty decent friends by the time I graduated.

Given all of this, I had developed a bit of a crush on her. She had a boyfriend though, so it was a no go. Near the beginning of the summer however, she and her boyfriend broke up (presumably) due to cheating on his part. She moped about it on twitter/facebook for a while and I can't say I wasn't a bit happy. I started talking to her more, but failed to ever tell her how I felt about her, even though at one point the crush was so intense that I would literally cry at night thinking about it.

I was never huge into texting, but I got a new phone about a month ago and I figured I'd give it a shot. I asked her for her number over twitter, she gave it to me, and we started texting. We had some long conversations, in a way rekindling the friendship we had near the end of the school year, but even better/stronger this time. Low and behold, one morning a few weeks ago I woke up to see that she had gotten back with her old, cheating boyfriend. I was crushed.

I moped around for one day but after that the romantic crush seemed to fade away. I still have strong feelings for her though. I have almost a platonic crush on her. I don't want to be with her (although I would probably jump at the opportunity) but I absolutely love talking to her and she has become a good friend of mine. The problem is, she's a busy girl. She has a lot of friends besides me, a boyfriend, and plays sports. I've always had a small, tight nit group of friends and was never much for extracurricular activities.

It seems as though I'm a LOT more emotionally invested into this friendship than she is. I have other friends but it seems as though my world revolves around when she's gonna text me back or whatever. Given all of this information, my question is, how can I emotionally detach myself so that I'm not so stressed all the time?
UPDATE: @Tyler thank you so much. I really appreciate the time taken to read and respond to my post. There's a bit of a problem though. The boyfriend has been saying all the right things and promised never to let it happen again etc. and they're just falling further and further in love. Needless to say, if they do break up, it's gonna be a while. Anyway, I no longer desire to be with her in such a way, I would be satified being close friends with her. This makes me believe it's more than just a crush. However, it causes me a lot of stress throughout the day thinking about it and is distracting from my school work so I don't know how much longer I can wait it out. Thanks again.

[Tyler]

Don't detach yourself from your emotions. Emotions make up you character, which is what makes you different from everyone else. Don't try anything stupid and try to make your move on her while she has a boyfriend. It will complicate things more. Wait it out, because if he cheated on her once, it WILL happen again. Afterwards, tell her how you feel. Spill everything. About her dating her ex again. About how you cried. Everything. I know that it's not as easy as it seems but it's your only way. I know because I made the mistake of hiding my emotions. The first time I truly felt love towards someone, I let it waste away. I've never felt the same towards anyone else. Don't make the same mistake I did. Anyways, if she turns you down, sorry, but that means that she never had feelings for you from the start. Good luck and take care!

[dgh]

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