I know I said I wanted more from him but in reality that is not a smart thing for me to do. I have also imagined what it would be like if I did get more from him and I know I'd be constantly worried about what he's doing when he isn't with me. Not fun.
If I start pulling away from him too fast I think that could cause problems with him as I have seen him make someone else in the office appear to be bad to work with (this happened after I became involved with him).
Whatever interest he has in someone in the office it seems to be long enough for him to get what he wants or until someone else with something better comes along. I think the latter is happening now. I don't know if he has any romantic plans for her but I figure that won't last long either. He might also think he could sting me along to have multiple relationships going on at once.
I just needed a 'reality check' regarding my situation and I found it here.