Believe me there are always others that are out there that have had it worse or feel lower than you do. Don't beat yourself up it's anti-productive and an easy way out. Just tell the truth and let what happens happen as it's all you can do at this point. You're not the only one to get screwed over by an alcoholic. They try to feed their disease by consuming you or anyone else they have to. They just want to get what they need. It's part of it all. It's totally selfish and blinding of all morality, alcoholism. Like I always say this disease never seizes to just blow me away. I've seen things spawn from it that just make no sense and are so wrong to anyone with the slightest understanding of right and wrong. Yet they just keep happening wherever this disease roams. You won't be surprised any more. Consider it part of the crucial learnings with this thing that make you better prepared to deal with it in the future.