Meadbh - We don't have any joint property or DP agreement, so a joint taxable investment account would be our only joint property. The BF was the primary income-earner while I was in professional school (graduated last year), so he bought the house with his own money. Dealing with the gift tax consequences of re-titling the house would be a mess, so we figured we'll wait for the day that marriage is finally legal for us (hopefully soon!). Now that I'm working, I make a higher base salary than he does, but a substantial chunk of his total compensation is in the form of an annual bonus. We try to treat the bonus as a windfall rather than counting on it for our day-to-day planning.
Webzter - I agree! I grew up with very little, so I am extremely uncomfortable spending lavishly, which led to some chafing in the past. He probably spends about $500 a month on "fun" meals, which isn't too bad in the grand scheme of things. Nowadays, he's gotten better at exploring places with other foodie friends, so I tend to skip out on the more expensive meals. It gives him more freedom to try new foods and cuts down on costs (since I am not joining in), so we are both happier.
BrianInSF - Thanks for the suggestion. I just started using mint.com and it has been wonderful! The student loans are high on my priority list, and $3K a month should get rid of them within a year. However, our mortgage is a 5/1 ARM, so I'd like us to pay down enough of the principal to re-fi into a 15 year fixed within a few years (right now, the principal is too high for us to be comfortable with the monthly payments on a 15-year mortgage). Also, since the mortgage is in the BF's name and the loans are in my name, I thought it'd only be fair to have him put his extra money into his obligations rather than mine. Once the loans are paid off, I'll probably put that extra $3K/month into a taxable investment account so we can earn a higher return than we can from prepaying more into the mortgage.