You have a great point. A couple of weeks ago when visiting my family I felt very alone too. My Grandmartyr (yes I said martyr) is a very difficult woman to be around...and well, lets just say it my folks are boring!!! I really needed my H to be there more for me, I really needed more from him....but instead he was pretty absent. Made himself busy doing things so he didn't have to be around much. It wasn't a slap at me or my family really....I'd have been gone too if I could have....he was just uncomfortable, but by doing what he did...I felt pretty abandoned too.
Making sure you two have some time together...even if it's just a walk, a dinner out....something really does help keep you connected.