<human>: Condense the text into a few key points

Hey guys and gals,

My girlfriend (23F) and I (23M) have been dating for almost 5 years, during most of which we were living and going to college in the same city. About 3 months ago, I moved pretty far away to go to grad school (from SF to Chicago).

Having dated for so long, we have talked about engagement, marriage, having kids, etc. However, recently I feel like I am detaching from the relationship. I have been keeping up the effort of calling, texting and skyping, but my heart doesn't feel like it's in it. I feel like the saying, "out of sight, out of mind" is applicable to me.

We have been fighting more than we used to, and that's the only time that I feel strong emotions about the relationship (like if she is angry and ignoring me, I'll miss her a lot). But on a normal, daily basis, I don't find myself missing her a lot. I feel bad about this, as she is really dedicated to the relationship, always telling me how much she misses me, how she can't wait for me to visit, etc.
I'm afraid that if this continues, I'll become miserable in the relationship and find destructive outlets (there's a pretty girl in my classes who has been catching my eye...) But honestly, I want the relationship to work, but I know it can't unless my heart is in it. I really want to get that old feeling back.

I miss that feeling of butterflies in my stomach when I get a text message or call from her. How are you guys keeping the spark alive?
<bot>: Girlfriend and I have been dating 5 years, recently became long distance. I don't feel attached to the relationship anymore. How to get the old feeling back?