I am 55 years old and live a happy life. Married with grown children. Recently I starting thinking about a girl from 1979 that I had romantic involvement. She died of cancer in the late 80's. We haven't talked or have seen each other since 1980. Just all of a sudden, out of the blue I started thinking about her. It enveloped my world. I brought a picture of her up as a screen saver at work. Staring at her face nearly brought me to tears. My hart ached. I was full of anxiety and depression from the thoughts of what could have been. I felt this obsession taking over. I took the picture down because these feelings started to frighten me. The feeling of urgency has pass, but I still find myself thinking about her every day. What is going on here?