<human>: Summarize the given text in a few sentences.

So I've been seeing this girl for almost a year now. We are not official really.. though we agreed to be "exclusive". Just recently, one of my friends told me that she used to hook up with this guy from work and I found out that part of that time was when we were just in the "getting-to-know-you" stage..She has a history of lying and she's a bit promiscuous too.. a contradicting personality to put it. After hearing this, it made me think back of the past months we had and got scared that she still might have been "seeing" him all this time.  I really don't know what to think or do. I love her but all these suspicions' killing me.
<bot>: Found out about SO's "FWB" history, I don't now what to do; should I talk to her about it?