Be sure to also read "Delivered From Distraction" by Edward "Ned" Hallowell M.D. There is a lot of information about relationships throughout the book, but ch 38 and 40 deal issues in depth.
Hallowell also a writes a very good Marriage and ADD blog in conjunction with Melissa Orlov http://www.adhdmarriage.com/
It's ESSENTIAL for anyone who knows or even suspects they may live with ADD to know how it effects their relationships. (If only my WAW and me had read this stuff years ago...sigh...)
Lastly take a look at ADDITUDE http://www.additudemag.com/ is a great reference and news site for all things ADD.
"My actions are my only true belongings. I cannot escape the consequences of my actions. My actions are the ground upon which I stand." Thich Nhat Hanh
