That's nice that he joined you on the afternoon hike with the baby. I'd consider that a positive versus your feelings of backsliding. The whole lack of physical contact definitely creates a void and I know that if my W and I get back on track that will be an issue as well.
Feeling like friends for now is not a bad thing and an opportunity to hopefully put a new foundation in place. Give it time and be patient. I always hear about that emotional void post pregnancy with a lot of couples. Hope you keep doing more hikes and he joins you, got to take advantage of Fall weather.
Me: 42 WAW: 37 Kids: 0 Separated: 06APR13 M:7 Years, T:10 years WAW states she wants to "move on": 01JUL13 "Courage is the standing army of the soul which keeps it from conquest, pillage, & slavery."