Hime wrote:It's just not as easy as just ending things though, we have just bought new furniture for the house, had the living room redecorated, going on an expensive holiday, etc...
It is that easy, though, as to be honest those really aren't good reasons to stay together if you shouldn't.
Hime wrote:I'm just rubbish at being the one to break things off... I'm not good at dealing with people crying and getting upset, plus I know I'd probably feel some regret after a few days and would buckle.
I'd say these aren't good reasons either. If she's pushing for commitment and marriage, and you don't want that, then dragging it out because you don't want the upset now will only make things worse for her as well later on.
Unless the reason you are hesitating is because you don't want to break up as it's not what you actually want. Hard to tell, and hard to tell how much her drinking is clouding both your minds.
Sounds like you really don't like her when she drinks. Would she stop, if she knew it was important to you? And if she stopped, would it make a difference to how you felt about her?