On my colleague who I have to see several times a week? It’s so painful and it’s making me feel depressed because I know the feelings aren’t reciprocated and plus it’s a bad idea to date at work. I just feel this gut wrenching emptiness that he isn’t attracted to me. I never thought of him in that way until he paid me some attention and since then the obsession has taken over my mind. He’s stopped giving me any special attention now but I can’t get back to how I felt about him before, which I want more than anything.