I think you need to decide exactly what is wrong with the relationship. If you are not attracted to him, and think you have a personality clash, perhaps there is no point wasting time.
But, if you think there is hope and it all it needs is effort, don't just blame him! Take some responsibility and look at yourself too. Have you done everything you can to keep the relationship fresh?
I am worried you've allowed communication to be so poor that you're posting it on the internet!
Good luck.