Oh, we both enjoy out alone time as well, usually when we're home we'll be in separate rooms and feel content with it. It's by talking that I know she feels bad sometimes when I've gone out for a beer with a friend, because it reminds her of how lonely she is. This is why I feel bad for going out, even though she has reassured me that it's OK that I do.
What I miss is probably the time when I could go out without feeling bad for her sake.
We have talked about it, I know she feels lonely when I'm out, we both enjoy an evening. I know she feels bad over not really having a social life outside of work. I don't really go our more than once every two or three months really, but I know she feels alone when I do.