I don't think it's unnatural for him to "miss you" consider how close you two are right now emotionally. The more you pull back, the more he will feel the void between the two of you and wants to be closer to you. On the other hand if you pursue then he'll probably run the other way. It's just a matter of balance in this situation. \:\) It's probably even typical in a relationship, maybe not as drastic perhaps?

M: 31
W: 31
M: 7 T: 8
S:4 D:2
Bomb dropped: too many to count or remember, 12/17/07 last one
S on 9/2/07
W sent off D papers 12/31/07. Me trying to live life and hope she returns one day.

My sitch:
http://tinyurl.com/3dqw93