Alcoholism is an addiction, both a compulsion and a craving. While active, alcoholics make booze their higher power, great love of their life, God and, unfortunately, it's more important than anything -- anyone -- else. It's the nature of the all addictions, including codependency. It may help to understand that active alcoholics aren't capable of love.
When I ended a long-term destructive relationship it took quite a while to let go of the anger and hurt, but eventually that happened thanks to Alanon. Now I can look back and remember some of the good times as well as dealing with the issues that led me to get involved with him in the first place. I also learned that on my part, there's a difference between love and need. I didn't like the guy ... but I thought I loved him?
I promise that peace will come, it's a process.