I agree with waiting to date, in fact, this incident seems like
a red flag for you about why you should not date until you have given
yourself time for healing and emotional balance.
This is a link about boundaries. It's a little long, and I don't agree with
everything, but it is very in depth & helped me understand much better.
Boundaries for Individuals: The Essay | Al Turtle's Relationship Wisdom
Note that he is not talking about dealing with addicts or
alcoholics, in fact, there is no reference to them on his website.
Still, it may be helpful to you