Marinainlove

I am not sure if this board is for questions regarding living with an alcholic, but I am not really sure where to start, and this website appeared when I searched for online assistance.
I have been in a relationship for a year and half with a man who I love dearly. In the beginning we enjoyed going to restaurants or eating at home and having wine, but I started to realize early on that this person has a serious problem. He drinks every single day. I am not exagerating when I say every single day.
We are living in a touristic town in the Carribean, where it is not really strange to see smiling folks having margaritas early in the afternoon. My partner is unable to drink hard alcohol, as he instantly gets sick, however he drinks 5- 6 beer a day, and sometimes wine, and it starts by 12 in the afternoon.
It is a struggle for me, because I do enjoy wine as well, but I do not feel it is problem for me.
Recently our sex life has completely stopped, as he is also a chronic pot smoker, has spent a good amount of his life using drugs, cocaine, ect.....That is an occasional maybe once or twice a month now.
I love him, as he is beautiful and brilliant, but I am finding myself depressed lately because we live in paradise, and never spend time together doing beautiful things, like walking on the beach, visiting other places, ect.
He is a painter and is often waiting for his paintings to sell, and I take on the jobs that offer a predictable income.
The situation sounds terrible for those on the outside, I am aware of that. As I know what advice I would give a friend if she was in the same situation. But my heart is involved and I am scared to be alone, although I feel I am alone now.
I asked told him last night I thought he was a sick man, and that I am trying to find balance in my life now and I am choosing not to even touch alcohol again. I said, it is challenging being with a man who never wants to sleep with me unless he takes cocaine. I am a beautiful woman, talented with music, and yoga teacher as well. As I write this I realize how ridiculous it really does sound.
I just want help, and I do not want to leave him, because I love him, and I want to help him.
My father is an alcoholic and I fear my life will end up like my mothers, but I am scared to leave, as I mentioned before. I have been at a creative dead end for a while now and I rarely practice yoga. It is depressing me.
I am looking for insight as to deal with this personality.
When I ask him if he chooses alcohol and drugs over me he tells me, yes he does because he does not want a controlling woman in his life.

Please Advise with compassion and understanding if you can....
Blessings,