Guy's Behavior

Why is my boyfriend drinking when he knows I hate it. Heavy drinker 0r alcoholic?

We have been together many years and he has always enjoyed a drink. I didn't think much of it at the start , he works and he has a can or 2 every night. So he has cut down a lot from how he was. He knows I hate it when he has the hard stuff like vodka it may only be a small shot of it. Just it changes him and I've tried to overlook it. He is truly lovely when he is sober. Just he pops to the shop for bread and I can see what he spends and where. As I get messages from the bank.
He comes back home and I can see the change in him and I hate it. He never admits to it he Denys it totally. Even saying that I'm making a big deal out if him popping to the shop for milk. When it's never just for milk. When I know he has had a tipple I just do my own thing. Yet he makes out I'm causing an argument and he is the one doing the arguing. It's his day of today and this is how it is. He will constantly become moody and make arguments then fall asleep. He keeps asking me why I'm in such a mood. I am sick of telling him its because I wonder why on his day of can't he just have a normal day with me. Instead of having to drink. Yet he won't hear this he will just keep on telling me 8m in a mood for nothing.
Then he goes out leaves his phone behind and I doesn't come back for hours. I feel so sad that it has to be this way. He calls me controlling and if he wants to drunk he will drunk etc. I just don't know what to think. This is when I realise his drunk is a problem
Why is my boyfriend drinking when he knows I hate it. Heavy drinker 0r alcoholic?
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