I agree with Kali on this. Its sometimes best to keep feelings to ones self when dealing with emotions towards a co-worker. While it may seem semi awkward trying to be around that person day to day due to work, if the other person doesnt reciprocate it can, as you have seen spark potential issues. There is nothing wrong with feeling the way you do, its natural for humans to develop attraction to others. Its what we are programmed to do. All you really can do is try to control said emotions and do your best to maintain a good work relationship with her. Welcome to psych central and I hope that you find the advice you are looking for