Hi Javier, welcome to Soberrecovery and so sorry for what brings you.
There is an old saying that "When the pain of staying is worse than the pain of leaving, you leave."
There were a few things that my qualifier (qualifier = alcoholic with whom you have a relationship) said over a short time period that convinced me that 1) he was not going to get help and 2) he wasn't really open to what was required to make a relationship work.
Also I really thought he was going to die and if I stayed I would die too . . . .hmmm . . . .maybe not die but my life would not be good as it would be chained to a dying person.
Really tough stuff.