Amanda, you said in an earlier post you don't want to date an alcoholic and then go on justifying doing that with "love". I've been a member of CoDA for years before I joined AA and I can't tell you how often I heard that and I have done it also in the past.
The feelings you experience regarding this man are not love. Maybe take a look at what makes a sick person who obviously is not able right now to have an intimate relationship attractive to you. I am pretty sure if you take a close look at your former relationships you can see a pattern there.