Lou, it could also be that the closeness and intimacy over the Xmas period has spooked him a little and he's popped back into his hole for a little safety. If so, I'm sure he will emerge again soon as he has consistently shown his desire to reconcile.
I think if you can act 'as if' you are okay with giving him (and yourself) a little space after your nice visit, that will be the best plan. Ask yourself whether him coming back and you saying - hey, I needed you to stay in touch more! - is going to help or hinder.
Take care my friend xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus