I would completely agree with your statement and I think you are right.  Part of the issue is we have both discussed this in great detail.  Just about 2 nights ago we went to a park and talked for a while and one of the things I told her was that I was fearing that our relationship was preventing her from finding the right person or at least making her not look at other opportunities.  I was very clear I didn’t want to be the reason she didn’t find what she needed.  Her reply is always the same that our friendship is the most important thing in her life (other than her children) and she says she cherishes every moment we spend together and I believe that to be true.  I guess that moment at work just kind of caught me off guard and I feel like I need to make a decision to either let this keep going and see what the result is and prepare for some more disappointments or pull back from it and let my feelings subside and not let us get closer.