<human>: Like I said in the title, my girlfriend has been acting really weird. And it's starting to bother me. 

Before she left, she was always ready to go. Sexually, I mean. But now, she says that she doesn't know if she wants to have sex or not. Being a horny 19 year old guy who just waited 3 months for her to get done, it's really starting to get to me. It was okay the first week. I figured things were just a bit awkward between us. But then the weeks went on, and she still doesn't want me. At all. She won't let me kiss her or foreplay with her. All we do is cuddle and watch Netflix. And then I started to get self conscious. So I started to shower more, take her out more, and pay more attention to her in a loving way. But none of that has worked and its almost been a month. 

That's not all, though. Before we parted for her Basic Training, we made promises to each other. Like me quitting chew, and the way we felt about each other not changing. One of the promises we made was that I'd save up money for the wedding, and I'd pay for half of the wedding and we would get married so that way the Army could support us in the way of BaH. (Money given each month to pay for housing). But when I asked her about it, she said she doesn't want to get married yet. She wants to wait. Because she wants "a friend" right now. 

All of this is killing me. I can barely get through my day at work without thinking about it. No, obsessing about it. Am I crazy, or has she fallen out of love with me? Is there maybe another guy? And if so, what do I do, guys? I'm scared.

Provide a brief overview of the text.
<bot>: My fiancé won't have sex with me, and she won't get married because she wants "a friend". I was fine with it at first, but now it's killing me.