<human>: Provide a brief overview of the text.

So, I dated this girl for about a year.  After one year she broke up with me for one of my best friends. Obviously, the aforementioned gentleman and I are no longer friends.  She broke up with me via text message on the morning of my 21st birthday.  As you can imagine, I did not handle the break up well. 
    Recently, I texted her to inform her that there was a very real possibility that we would be attending the same college next year.  She was apparently transferring there to continue her worthless major in a larger metropolitan setting, while I planned on getting my Ph.D. at the same college.  I was not trying to rekindle the romance or anything, so I texted her, told her what I needed to, and thought that was it.  
     The next day, she texted me again and asked me about my life.  I figured it was typical ex behavior (trying to figure out which one of us is doing better).  From what I gathered, she had not changed at all; however, I had traveled the world, made significant progress in my research, and had gotten in great shape.
     Her texting and phone calls persisted and soon turned sexual.  I am not proud of it, but all of those feelings I had done my best to forget about just started resurfacing.  During these conversations we decided on a date that we would meet up and commit the aforementioned activities.  I figured that it was implied that she was single.  
     Last night she confessed that she had a boyfriend and that she had recently felt guilty about everything.  What the fuck!? She is still dating the guy that she dumped me for! I need guidance here.  She is still texting me, despite her "overwhelming guilt."  I am stuck with all of these feelings while she uses me and cheats on him.  What should I do? Already told her I don't want anything to do with this, but she keeps texting me.
<bot>: Ex is trying to bang me, has a boyfriend, told her I don't want to have anything to do with her, keeps texting me,  not sure what I should do