Ended my relationship but he

So I was in a 5 year relationship with this guy who Ive known since I was like 10 (were both 20 now). We started off as friends then bestfriends and so on. But for the last few months I felt that it was best to end it and just two weeks ago I finally ended it. It did take me two times to actually break up with him. The first time he said we could work things out and stuff and I was so stupid to agree but then I realized that all I want now is to focus on myself, my studies and work. Thats when we had the talk again and yes he got really mad but I dont blame him. If I had told him how I truly felt months ago maybe this wouldnt have been so bad. We had decided that we would cut off all communication for at least a month. That however didnt go as planned. Because hes still trying to get me back I guess you can say. I would hate to constantly break his again but he leaves me no choice. He doesnt seem to understand that I dont want to get back with him. I really dont know what to do. Hes texting me still talking to me as if we were still dating. Its seriously so annoying. All hes doing is making me not want to talk to him ever again but I would love to just stay friends but seeing how he is now makes it seem impossible. I know that he loves me & I probably wont ever find another guy that loves me as much as he does but he just isnt the guy I want to spend the rest of my life with. I want him to move on but hes only making this worse for himself.