As someone in the grip of fertility issues, I can understand just how tough what you're going through is. I hope you can find a way through.
. Also good to hear everyone's experiences - so many people dealing with these issues.
For us, it certainly has been hard on our relationship, and there have been rows and periods of difficulty. We've worked hard recently to put ourselves first, in fact we're getting married this year, to celebrate ourselves and our relationship.
At one point during ttc, I couldn't find joy in anything, including my relationship. Life felt pointless and I felt trapped in a way of life that had been set up for kids (we moved to a suburban house, painted a nursery ready, I moved to child friendly local job, made new friends, who all had kids). The sense of failure and the lack of a child loomed so large in that set up. I became utterly depressed. I had counselling and tried to make myself happy with my lot. Didn't work, so I quit my job for a big promotion and long commute. The change of focus did wonders for my happiness!
For what it's worth, I do think you need to explore why you don't feel IVF is right. I'm not saying it's the wrong decision at all, and it is brave one to make, but you need to be clear as to why, as by not doing it, you are taking away a potential chance to conceive. I hope that doesn't sound too harsh but sometimes we make barriers for ourselves and need to know why. I won't lie, doing IVF is not that bad, but doing it, and it not working, is the hardest thing ever. I'm in the middle of my second cycle now, and, whilst I hope with all my heart it works, I am starting to explore, very slowly, the possibility of not having children. I won't be ready to give up for some time but I am starting to feel that I could find happiness in other ways.
I hope things work out for you, whatever you decide.