One thing I thought I put but may not have made clear. Her and I park in the same parking garage and take similar ways in and out of work. I also sometimes see her at many department meetings. I admit I was overly fixated on her and certain things I do as part of my routine(stopping outside to put on sunglasses and my earbuds), could be misread and me spying on her. I explained this to HR. I also want to clarify that I 100% don't blame her for this. Honestly, all these signs I could very easily see myself interpreting the same way and being uncomfortable about it. At this point I blame myself for being overly fixated by her in a way that may have verged on predatory. Thank you all for the feedback. I can't express how much I needed it.