fearless
I think I know what you are talking about...In fact I have been in the same situation . Here is what I suggest you to do:
When he wants to come to see you tell him that you would be willing to see him under one condition and that is if he has something new to tell you. Now, make sure you clear what you mean with something "new". tell him that you would be more than happy to see him when he feels confident about this relationship and when he knows that he no longer has doubts about it.
Now, make sure that you don't sound mean or anything. Be very sweet and kind, yet be confident at your decision.
There are several advantages to this: From your emal, I felt that you don't really want to break up with him...or don't want to not have him in your life. By saying this, you have not really put a definite end to this relationship!! You are just protecting yourself!! Before telling him all this, make sure that you truly want to do it!! Make sure that you peace with yourself.
Does this make sense to you? of course, you are the ultimate decision maker. This is just a suggestion!