I've been with DP for three years. We live together and we're getting to that stage where we're thinking about the future. Aside from plans of marriage, children, houses etc., I feel we're fundamentally incompatible with our approach to money. I don't see how we can live a happy and fulfilled life together without one of us compromising hugely
Basically, DP thinks that because we're both "young professionals" we should live a particular sort of lifestyle involving expensive cars, exotic holidays and big houses. He wants people to think we're very well-off.
I think these things are a waste of money and I don't give a shit if people think we're wealthy or not. For the record, we're not all that well-off (more on this below).
Example: Our kettle broke. I saw one for £32 which would go perfectly in our kitchen. He agreed it'd go well but he wanted a top of the range Bugatti kettle costing £230. It wouldn't look as good as my £32 kettle but he wanted it because the expensive one was more "us" 
Another example: We went to a wedding. I looked amazing if I do say so myself in a 60s-style dress. When asked where I got it, I replied honestly that it was £3.50 in the Primark sale. He was annoyed that I'd admitted to people I shop in Primark.
Anyhow, he thinks because we're "young professionals" we should have a particular type of lifestyle. Except, he earns less than half what I do. So when he says he wants us to have this lifestyle, what that really means is for him to enjoy that lifestyle which is coming courtesy of my wages. We have a joint account, that was a mistake. However, if we separate accounts I know he'll just put it all on credit card because he's completely desperate to convince people we're loaded.
We've talked, we've rowed, we've cried. I've realised over the last couple of weeks that he's not going to change but I don't want to be in a relationship where this is an issue. I've grown to see how unattractive it is that he's so desperate to impress and I've struggled to find him attractive enough to have sex with.
He knows something's wrong and I know it'll hurt him massively but I need to get out for my own wellbeing.
I don't know why I'm posting. Hand holding maybe.