So I approached this girl quite smoothly in class because of my experience with cold approach. I got her number on the second encounter and I could tell she liked me but something was holding her back. She now no longer wants to walk with me after classes. What I have just realized is that my breath was probably bad on at least two of the occasions I spoke with her. This is likely because of a sinus infection that I had that I ignored. Should I just forget about her and move on or is there a chance to salvage this.