Hello Friend, Good that you are seeking a help. All your symptoms are sign of anxiety. You still have a rooted emotion underneath which is triggering such thoughts and actions about that individual. Better to manage it by first identify the root cause for your emotional battle and find out a suitable solution to overcome this. Else it will affect your body physically condition  like sleeplessness can trigger many health issues. You may need a guidance of counseling support to figure out the reason and suitable solutions