Unfortunately....there is a real possibility that you two will end up on opposite shores. BUT...you must take care of yourself, you cannot let him suck you into his misery. Regardless of the other options you must stop enabling his behavior...you don't realize that don't you?
Remember if you do strike out for shore, and he either sinks back into alcoholism or strikes out for the opposite shore....this is not YOUR doing, it's his own....it's his choice. Now that part that would really suck (and I know this my XH did this to me) would be if he chooses to sink into alcoholism over being happy with you. That's where it gets personal, or at least it feels personal towards you. I remember just like it was yesterday the day I told my XH if he didn't stop drinking I was gone....he didn't stop. He chose alcohol over me and that really hurt. But you know what? I did what was best for me, I couldn't save him if he didn't want to be saved....but I could save ME. I did and I'm so happy I did.
I understand that you love him, but try to keep in mind that sometimes it takes drastic action to get someone to snap out of it. That's one way to look at swimming for that shore. If he chooses to stay and wallow while you swim, or he strikes out for the opposite shore...and you two end up being apart, he may come to a point where he truly begins to miss you....and then sees he has to do something drastic in his life to get you back.
My XH had his last drink the day I walked out the door....FWIW.
