<human>: Give me the gist of the text in a nutshell

So this all started just about a year ago. She had just started working at the company that I work at and started in my room. We started talking and hit it off immediately. We would talk for hours while at work and had a lot in common. 

She was dating a guy at that time and up until June of this year. After they split up we started hanging out outside of work hours. We were hanging out 2-3 times a week as well as with the 8 hours at work. Everyone always assumed that we were dating because we were always around each other. Recently she got a promotion and moved out of the room and onto a different shift. Things were okay at first and we still talked all the time regardless of being on different shifts.

We still hung out a lot outside of work and would fool around a bit each time we were together. Until she went to a wedding and she decided that she didn't want to do that anymore because she felt bad about herself doing stuff with other guys when she wasn't fully over her ex. I told her it was okay I was fine with whatever she wanted.
Last week then her ex told her that he was thinking about applying to were we work and was looking at moving to the area where she lives. Since then she has been entirely different and we barely speak. At this point I don't want to lose a chance at her or lose her as a friend even. I'm stressed out to the max about this and don't know what to do.
<bot>: Met an amazing girl at work, started spending tons of time with girl, girl breaks up with boyfriend, start getting closer, then she talks to ex again and now she is getting very distant.