apple-slice,

So this relationship of 4 months has been one of phone calls and/or texts and/or Facetime/Skype?  You have never met him at all and this visit in a week will be the first time you have actually see each other face-to-face?

When you said you two have not been affectionate lately, what does that affection look like?  Is in the form of words that convey fondness, warmth, tenderness and care?

My take all these feelings of  something being missing may all go away when you actually see him.  Be patient and see what happens.

Mark