Please tell me if I did anything wrong?

I have one guy frd with whom I hooked up last yr. Since I got attached with him, he stopped talking with me. then after couple of months we started talking coz he realised that I got over him or any attachment related to him. Now since he lives in other town, as a part of being good frd I liked to email him but then I realised that this emailing process is taking me back to my past time of hooking up. so I emailed him today and told him that I don't want to continue my frdship coz I still feel regretful about our encounter. Also due to our diff views and my caring towards being good frds doen't allow me to be your frd. then I told him tht despite him being nice guy, I can't be his frd coz I can not be with a parson who doesn't care about any frdship. Like he did not even reply me about how he likes me surprice for his birthday. So my problem is did I make any mistake by telling me how I feel or did I do anything stupid. Also he is big player so he belives in casual relationships without caring for girls.Plese help me.