-write him a letter giving him some of the reassurance you wo uld like.
-let him know that you are (both) going through a healing process and that it has stages.
-that the reassurances you have been asking for are your impatience to heal and move on.
-that even when things are at a rough spot (like now) that you are dedicated to the R and to him and that he IS enough and good enough or you wouldn't be bothering to go through this process with him in the first place.
You are very eloquent with the written word, so I'm sure you can express those things better than I can.