How do you deal with it? (boyfriend playing too much video games)?

I moved in with my boyfriend about a year ago. When we met it was instant connection, we have everything in common down to our hobbies, favorite foods, music, and work. We would be outside together every day doing something, and spend our weekends camping or hiking. Until a couple months ago we were pretty much inseparable. A few times a week I go out to meet a friend or ride my horse for the fact that I know it's not good to ALWAYS be together.

We both work in the trades and the winter was rough. I took up some part time, but he was unwilling to work unless it paid was he was making normally. For some stupid reason after paying his rent he still had hundreds of dollars to blow on alcohol and random spending, and pretty much took up drinking every night to cure his boredom. With his leftover money he ended up putting it towards a 2000$ computer even though we did not have money for groceries, and the cable bill was giving us final notices. At times when I was bring in even a little bit of money we would ask me to lend him my last 100$ (for something stupid like a mouse) and he would pay me back off his next unemployment. I always gave it to him because I love him, even though I would bite my tongue knowing it should be for food or gas.

Anyways, we are back working of course, but now that he has his nice computer he is on it 24/7. I understand that guys like to play their videogames, but he plays them from the time we get home to maybe 3 in the morning. I like to play my zelda and mario cart, ect.. but I play for a couple hours and move onto something else. Aside from the games he is on the weed every night, and drinking a case of beer every night. Last night he drank half a liter of whiskey, and a six pack casually while he played his games. This morning he said he was not in the mood to work, even though he has never done this. He use to drink a couple of beers on stressful days and we would both have a few drinks on friday night. Lately he told me he is more comfortable drinking on his own so he can get into his games and enjoy his online friends. On the weekends he gets shtfaced and goes off to the casino in the middle of the night. I get worried sick about him when he leaves the house really drunk and when I try to stop him he just pushes me away. He is hungover almost every morning and never wants to go out anymore. He never wants to visit with my family anymore, but gets furious if I tell him I don't want to go over to drink at his brothers house.

I love him to death and I cannot imagine even a day without him, but at the same time he is changing and half the time he is home is high or drunk. I have bad allergies to cigarette smoke and I have begged him to quit, for both his health and mine. He is great on the patches other than the second he touches alcohol he needs to smoke. When he is drinking I want to break up with him, I hate it when he is drunk early in the morning trying to wake me up.

I don't think I would ever leave him, but I want to know how to deal with this? I try to do my own thing, but this is still my home and I hate living with someone who is in an online world more than reality. I imagine a lot of girls deal with this? What do you do? What to do say to him? I have often asked him why he even needs me, and he just says "I love you, I want you, I can't live without you". But he does not show it, he loves his games and his internet more. His actions show it.