I've not read all the other posts, so forgive me if I repeat what they've said. I have 7 month old twins, and I can honestly say I am shocked by the affect babies have had on my relationship with my husband. We virtually fell apart in the space of two months, despite talking and talking and trying to help each other. Things are repairing themselves now, but I suspect some things will reoccur and rankle for a good while yet.
With us, I spent 24/7 with our babies, mostly breastfeeding them (which has the added irritation, aside from being technically tricky at the start, of being physically knackering while it looks like you're reclining with your feet up. I wanted to yell "I'm working really hard here" everytime I fed while DH washed up etc). DH went to work and then came home and did everything for the house. He did the shopping, cooked dinner, cleaned the house, did the washing, paid the bills, spoke to the neighbours - literally everything that wasn't directly baby related. I don't think it could have been any other way as I honestly didn't have a chance to do those things. He would then soothe and pat our babies from 9pm til 11pm so I could get 2 hours sleep. We did that for 2 months.
The result of this (unavoidable) split of work was that he felt I didn't trust him with the babies and didn't want in our 'nursery cacoon'. I felt that he didn't love us or want to spend any time with us. We discussed these feelings endlessly (normally in tears), but were completely unable to change the way either of us felt. I can explain why we couldn't change things, but we couldn't, despite both really wanting to.
I only have a minor appreciation of how/why my husband felt the way he did, but I can tell you why I think I struggled. I think I was suddenly a mum, and a stay-at-home person, and working harder than I can ever imagine anyone working, all on virtually no sleep. This combination of not knowing what you're doing (particularly when you care so very much that you get it right), plus the feeling that you should aomehow be running the house while you also look after the baby, leaves you really doubting your abilities. At work, my boss used to make it clear when he was impressed or disappointed, but as a mum, I get no feed back or thanks for my efforts. I found that really hard. I became convinced that DH though I wasn't pulling my weight and that he was disappointed in how I coped with the babies. When I tried to explain that I needed him to say 'well done' sometimes, he said he didn't know any other babies to compare ours to, so he didn't know whether I was doing a good job! So that request backfired then!
In contrast, he was working so very hard running our lives and going to work, while all I could do was moan at him for not spending more time with us. He felt unappreciated (and knackered).
Having explained all that, I don't know what the answer is! I can only suggest talking to each other, complimenting each other, and forgiving each other when you feel attacked. And I can say things started to improve after about 2.5 months (as I started to feel more capable and take over some of the house things, and the babies became less dependent on me.
Good luck, and know you're not the first to be where you are. Others have been there and their marriages survived!
We've slowly changed things now, basically by me gradually taking over 'house' things as I can fit them in.