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

So yesterday I had sex for the first time with a girl whom I love very much. It was her first time too. We are not in a relationship. Our relationship is... Complicated. 

I love her very much and would very much like to be her boyfriend. She does not seem to want a relationship- even though we have kissed and she told me she loves me- and now, we had sex. We have known each other for 4+ years. 

She climaxed, I did not. After her orgasm, she just got up and got dressed and asked me to take her home. She didn't have much to say. Only something along the lines of "this isn't something we should be doing often."

I took her home and all she said to me was a half hearted "goodbye." I felt very sad for the rest of the day and barely slept. Today, I feel even worse. 

I've just been very upset all day. Sitting around. No interest in anything. I haven't heard from her and frankly I'm too upset to contact her. I don't know what to do. One of my friends suggested I should contact her soon and be upfront about our whole relationship- especially why she rebuffs me even when we have done many things together and after she declared she loves me.
<bot>: Had sex with a girl I'm in love with, feel horrible afterwords. The girl seemed distant afterwords. Need help in figuring out what to do next.