How long did your longest relationship last?

I was with my ex wife for 17 years, married for 12. In hind site it didn't work out because we were drinking buddies more than we were partners. I stayed with her longer than I should have because of my son. Five years later my daughter was born and I knew I had to make a change. I put myself in rehab and stopped drinking completely. She did not want to give up her old lifestyle, so it was time for me to make my exit. I've been divorced from her and sober now for over eight years, not to mention that I have a great relationship with my kids.