My Non-ADHD Spouse is Leaving Me...

My Non-ADHD spouse is leaving me and I'm feeling completely hopeless, I really don't know what to do.  We care about each other so much, but things have been so bad for so long that he has given up any hope for us.  I don't blame him, I see how miserable he is, and I also feel hopeless alot of the time.  The sad truth is that while I understand that ADHD has an impact on our relationship, I've never understood how to make the changes that are needed.  He feels completely ignored and rejected, and feels that all of my negative behaviour is intentional because I am taking medication for ADHD, and we have been in counselling for a number of years without success.  Recently I started individual counselling again to see if I could work on my issues more effectively on my own.  Our arguing and his constant criticism over the years have taken a significant blow to my self-esteem.  My impulsivity and emotional outbursts have done the same to him.  We are both filled with pain, anger and resentment, and there doesn't seem like there is any hope for a change.  Please help, I love him so much and can't imagine my life without him.  It may be too late, but I really hope there is something, anything I can do.  Thank you.