<human>: Can you provide a brief overview of the text?

I have been dating a girl for about 5 months.  She had moved about an hour away into a house that my friend owns/lives in and we were only seeing each other on the weekends.  

We had been exclusive, briefly, but she wanted to back things off a bit.  She had gone on a few dates with other guys but nothing serious came of it for a while. She then told me that she had slept with another man.  I wasnt happy with it and I had told her that.  I had my suspicions about my "friend" and when I asked her about it, she said they had slept together.  I fucking exploded and caused a huge scene at work(i had found out at work, over text message), seeing as how this is a former friend and coworker and now everyone knows our business. A lot of them are/were her friends.  

 We didnt talk for a while, but I saw her recently for about 30 minutes to talk.  She apologized and then we talked for a bit.  I really really like her and dont want to lose her, but she lives with this douchebag.  I dont know what to do.  help?
<bot>: A girl I was dating slept with a "friend"/coworker of mine that she lives with, I exploded at work.  I dont want to lose her but I cant trust her in that house.  help?