Akrasia, he just kind of laughed and said he thought I was exaggerating. I promised him I wasn't. He thinks it's a joke and not a problem - but that's because he's so drunk he doesn't know what's going on, whereas I'm fully aware when I'm dealing with him all night.
When we're out together I don't really have to watch him, it's like he won't drink excessively when he's actually with me, so I know he CAN control himself if he really wanted to, that's why i can't understand why he does it when I'm not there.