it must be utterly exhausting dealing with all HIS issues.....actually you sound more like a caseworker than a G/F because your "role" in his brand of crazy is just that.
what concerns me is your kids having to live with all of this as well. addiction and untreated mental health issues coupled with suicidal ideation are a LOT for anyone to deal with, but kids just aren't equipped. and mom has a full time job trying to manage someone who probably belongs in a secure facility for a period of time until he is stabilized.
regarding the arrest report, i think individuals who report drunk drivers are protected from being identified in a police report. otherwise no one would ever call. however, it is what it is....and if he can't handle that his own choice of actions led you to make the correct call to get a dangerous person off the roads, well........that truly is HIS problem.
whew. i do hope that you are getting individualized support for YOU through all of this.