I don't think it is helpful or fair to judge CH or her relationship, those are some pretty judgemental HARSH verbalizations...you were not there, nor do you know their history.
ASSUMING you know what is going on in their relationship is not what she asked opinions on.....
"Frankly, CH, I am amazed that this is the first time something like this has happened to you in 5 years of being with your boyfriend. If he is an alcoholic, he has probably had sex with somebody in five years also.
Problem is Alcohol allows us to let go of all inhibitions--Sex is the one thing that overwhelmingly looks like a good idea when your in mixed company and partying. A guy you would never be interested in your sober life, get's lucky because your out of your mind. Great places for losers to hang out are bars-"-Luck be a Drunk Lady Tonight", ya know.
Chances are you did not put up a big fight, maybe even initiated it. Your girlfriend was probably as drunk as you, so I am not sure she would have been in any condition herself to be telling you what you should or should not be doing, let alone Save you from anything. She is not your caretaker.
Look women and alcohol are a Wreck waiting to happen and a rape ready to happen! It isn't pretty, but that is what we expose ourselves to every time we get smashed".