<human>: My girlfriend and I have been in a relationship for six years next week and have had a long-distance relationship for about 70% of that time. We met online and spent our first year apart, planning to meet. The next year, in November, I flew out to her house for the first time and we spent two weeks together. It was everything we could have hoped for and started planning our next trip, this time with her coming to my house for almost the entire summer. We've done this for the past four years now, with my trips to her house getting longer and longer each time - the most recent trip lasting three and a half months - except for this summer. We were planning to have her come out, like always, but waited too long and she is no longer able to visit. This is mostly my fault, and I would like to think it's unrelated but... 

Anyway, fast forward to now. A few weeks ago, she mostly stops talking to me for an entire weekend and we've barely gone a day without talking at least once. Since then, she's stopped telling me that she loves me. We have this little term that we call each other, and she's stopped using that. She tells me that she isn't sure how she feels about me, she doesn't know if we should be together. We had a long talk on the phone earlier tonight and she mostly told me that she needs time to think, time to realize how she feels, and that, in her mind, it's easier to say that we're broken up or on a break than to lie to me. She told me that since I left her house in March, she feels like we're not together. That we're not even in a relationship when we're apart, that we're just friends. 

I love her with all of my heart and she means the world to me. She's one of my only friends and I cannot imagine my life without her. I understand that she needs her space, that she needs time to think, but I just don't know what to do.

Can you give me a shortened version of the text?
<bot>: My girlfriend of six years says she doesn't know how she feels about me and isn't sure if she is in love with me anymore. She doesn't know if we should be together anymore and I don't know what to do.