Hey recently these thoughts have been coming into my head and it all started with thinking how happy i am in my relationship with my fiance and how i have never felt so happy. In work there is a guy who i went with years ago and then these thoughts started coming into my head what if such or whatever were to happen and i started to freak out because i was thinking to myself what the hell am i thinking. Then my head started going through all the men in my past life and it is killing me. ITS Like my mind automatically thinks of them without me knowing and it depresses the hell out of me and it is damaging and hurting me soo much that i can barely concentrate on my happy times now because i feel so negative all the time? I know myself that i would never never act on my thoughts but i just want my brain to return to normality. What can i do? Please