C.,
My husband and I went through the same stage during my son's first year. I was the problem. We moved when I was seven months pregnant, and we didn't know a single person in our new state. He was still commuting over the line to his job, but I was stuck in the house, in a strange place, with a baby and not one single friend. I still had the phone and email, but it's not the same. It was only when I started my at-home business, and joined a playgroup to meet other moms, that things got better.
I resented my husband for being able to keep so much of his old life after the baby, while I had nothing. I was angry that he was my only adult contact for conversation or activities, pretty much anything that wasn't breastfeeding or changing diapers. He had spent all day with people at work, and really just wanted to read or watch tv or use his computer, and I was desperate for someone to talk to. That's way too much of a burden to put on any one person. Once I made some friends and got involved is some things outside the house, I didn't need him so badly, so I didn't get angry every time he wanted to do something alone, and the tension eased up a lot.