As you already know, good communication is the key to a successful relationship.
Perhaps when he comes back you can arrange a trip together, just the two of you?
I am sure with all you have learned from these boards that you can find a way to let him know just how much you are still hurting and need a little more attention right now.
Hang in there, piecing is hard, but so much better then the other stuff.
There can be no testimony without a test. I am praying to go through this test and come out the other end with a new and better marriage then before.