You cannot change another person unless they want to change.Trying to help an unwilling alcoholic will only enable them to fall further into their alcoholic abyss.
But, we have to be realistic and look at cases individually.
But we do not live in an ideal world and many people fall for alcoholics.
It can be very hard, especially at the beginning of a relationship,to leave someone you really care for, even love because he/she has a drinking problem.
It is easy to kid yourself and say that it is just a phase they are going through and that they will stop drinking. The active alcoholic will never stop drinking unless he or she wants to, no matter how much they profess their love to you.
If you do decide to continue dating an alcoholic then it is important to set boundaries.